# 1:12 Scale Dollhouse — Complete Master Architectural Blueprint & Build Guide
## Victorian Gothic Revival Architecture • 1:12 Standard Miniature Scale
### 32" (32.00") Carcass Width • 11-1/2" (11.50") Living & Kitchen • 8" (8.00") Foyer • 6" (6.00") Bath • 12-1/2" (12.50") Bedrooms
### 1/8" (0.125") Deep Dado Joinery • 8-1/4" (8.25") Partition Panels • Dual Ruler Fractions & Decimals • Master 10-Phase Build Flow

> [!TIP]
> **Complete Printable Architectural Plan Book Available**:  
> A complete, 19-page publication-quality architectural PDF document containing all technical schedules, 10-phase build manual, and all 11 high-resolution blueprints is generated and ready to print or view on your tablet/computer:  
> 📄 **[Download / View 1-12_Scale_Dollhouse_Master_Plans.pdf](file:///c:/code2026/house/1-12_Scale_Dollhouse_Master_Plans.pdf)**  
> *(Also mirrored in your conversation artifacts directory: [Artifact PDF](file:///C:/Users/Hack/.gemini/antigravity/brain/be34cacd-367e-4ed7-819c-8f861ebb0996/1-12_Scale_Dollhouse_Master_Plans.pdf))*.

> **Scale Reference**: Strictly **1:12 Standard Dollhouse Scale** ($1" = 1\text{ foot}$ / $1\text{ inch} = 12\text{ inches}$)  
> **Clear Room Ceiling Height**: Exactly **8" (8.00 inches)** ($8'0"$ real-life equivalent) per story  
> **Material Specification**: **1/4" (0.25") Baltic Birch Plywood** throughout  
> **Partition Joinery Method**: **1/8" (0.125") Deep × 1/4" (0.250") Wide Precision Grooves (Dados/Rabbets)** routed into floor decks and ceiling decks. Inner partition walls slide directly into the grooves, producing self-squaring, rock-solid joints with zero visible cleats!  
> **Crucial Partition Height Engineering**:  
>   • Because each partition seats **1/8" (0.125")** into the floor deck groove below AND **1/8" (0.125")** into the ceiling deck groove above, the four interior partition panels (`D1-A`, `D1-B`, `D2-A`, `D2-B`) are cut to **8-1/4" (8.25") High**!  
>   • Calculation: $8.00" \text{ (clear ceiling)} + 0.125" \text{ (floor groove)} + 0.125" \text{ (ceiling groove)} = \mathbf{8.25" \ (8\text{-}1/4")}$.  
>   • *(If cut at 8.00", the partitions would only bridge 7-3/4" between the groove bottoms, reducing clear room height!)*  
> **Overall Carcass Dimensions**: **32" Wide × 12" Deep × 24.90" High (32.00" W × 12.00" D × 24.90" H / 24-7/8" H)**  
> **Equal Floor Span Alignment**:  
>   • **First Floor**: Living Room (**11-1/2" / 11.50"**) + Kitchen (**11-1/2" / 11.50"**) + Foyer (**8" / 8.00"**) = **31" (31.00") net room space** ($31-1/2"$ between gables, **32" carcass**)  
>   • **Second Floor**: Bathroom (**6" / 6.00"**) + Women Room (**12-1/2" / 12.50"**) + Mans Room (**12-1/2" / 12.50"**) = **31" (31.00") net room space** ($31-1/2"$ between gables, **32" carcass**)  
> **Two Base Levels**:  
>   • **Level 0 (Landscape Area Plinth)**: **48" Wide × 32" Deep (48.00" × 32.00")** (provides 8 ft / 8" landscaped grounds all around with lawn, flagstone walkway, garden beds, side garden bench, and terrace)  
>   • **Level 1 (House Dedicated Base Platform)**: **32" Wide × 12" Deep (32.00" × 12.00")** (clean rectangular plate; elevated 1/2" / 0.50" on stone watertable foundation rim; direct front entry steps; zero porch)  
> **Roof Structure & Framed Rear Attic Roofline (20% Height Reduction)**:  
>   • **Front Roof (E1)**: Continuous unbroken solid slope (**32" W × 12-1/16" Run / 32.00" × 12.04"**, 54.5° pitch, 8.40" peak rise, 1" front eave overhang, flush with 32" carcass gables)  
>   • **Rear Roof Slope (E2)**: Matching slope (**32" W × 12-1/16" Run / 32.00" × 12.04"**) featuring a prominent **27" W × 8.40" Alt triangular peek-in cutout** that restores the classic gable roofline from the backview while providing direct, unobstructed hand access into the finished 3rd floor cathedral attic!  
> **Identical Standard 1:12 Windows (All 7 Window Units)**:  
>   • **Hole Size (Rough Opening)**: Exactly **2-1/4" Wide × 5" High (2.25" × 5.00")**  
>   • **Frame with Flange**: Exterior casing with **1/8" (0.125") flange lip** all around = **2-1/2" Wide × 5-1/4" High (2.50" × 5.25")**  
>   • **Total Window Count**: **7 identical sets** across the house (5 on front facade + 1 on left gable + 1 on right gable)  
> **Front Window Placement & Symmetrical Centering**:  
>   • **Living Room (1st fl)**: Centered in 11-1/2" Living Room at **X = 6" (6.00")** ($X = 4-7/8"$ to $7-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).  
>   • **Kitchen (1st fl)**: Centered at carcass centerline **X = 16" (16.00")** ($X = 14-7/8"$ to $17-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).  
>   • **Bathroom (2nd fl)**: Centered in 6" Bathroom at **X = 3-1/4" (3.25")** ($X = 2-1/8"$ to $4-3/8"$, $Y = 9-3/4"$ to $14-3/4"$) directly over front clawfoot tub.  
>   • **Women Room (2nd fl)**: Centered in the 12-1/2" Women Room at **X = 12-3/4" (12.75")** ($X = 11-5/8"$ to $13-7/8"$, $Y = 9-3/4"$ to $14-3/4"$), leaving an exact, symmetrical **5-1/8" (5.125")** of solid wall space on both sides inside the room!  
>   • **Mans Room (2nd fl)**: Centered at **X = 26-1/2" (26.50")** ($X = 25-3/8"$ to $27-5/8"$, $Y = 9-3/4"$ to $14-3/4"$), aligned directly above the Main Birch Front Door (**X = 26-1/2" / 26.50"**).  
> **Side Gable Windows Specification**:  
>   • **First Floor Side Windows Only**:  
>     1. **Left Gable (B1)**: Living Room side window centered in depth at **Z = 6" (6.00")** ($Z = 4-7/8"$ to $7-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).  
>     2. **Right Gable (B2)**: Foyer window **moved closer to the back at Z = 9" (9.00")** ($Z = 7-7/8"$ to $10-1/8"$, $Y = 1-1/2"$ to $6-1/2"$). Leaves **1-7/8" (1.875")** of solid clear wall between the window and the stairs landing ($Z = 6"$), completely eliminating any stair overlap!  
>   • **Second Floor**: **ZERO SIDE WINDOWS** on both side gables per user directive (Bathroom and Mans Room side walls are completely solid).  
> **Window Specifications**: **2-1/4" W × 5" H (2.25" × 5.00") rough opening** (2-1/2" × 5-1/4" overall with 1/8" flange). Total = **7 sets** (5 on front facade + 1 on left gable + 1 on right gable).  
> **Foyer Fireplace**: Exactly **5" Wide × 1-1/2" Deep (5.00" × 1.50")** on kitchen divider wall facing Foyer.  
> **Foyer Stairs**: **2" Wide (2.00")** along right gable wall. **Lands on lower floor in the middle of room depth ($Z = 6" / 6.00"$) and ascends forward to front wall ($Z = 0" / 0.00"$)** to reach 2nd floor Mans Room. Leaves the rear 6" of the Foyer completely open!  
> **First Floor Doors Removed**: Living Room, Kitchen, and Foyer connect via open cased walkthroughs (**3" W × 6-1/2" H / 3.00" × 6.50"**) with zero interior door slabs hung.  
> **Second Floor Doors**: Authentic 1:12 inside doors (**6-5/16" H × 3-7/16" W × 11/16" D / 6.29" × 3.46" × 0.66"**, $12.47 each) connect Bath <-> Women and Women <-> Mans.  
> **Bathroom Suite Layout**: Clawfoot bathtub placed along the **front wall** under the front window ($X = 3-1/4"$), pedestal sink with mirror mounted on the solid left gable wall directly **in front of the door**, and vintage toilet with tank tucked on the solid left gable wall **behind the door swing**. Front window only (completely solid side wall with zero side windows).  
> **Decorative Furniture**: Decorative furniture stripped clean; fireplace, stairs, railings, and bathroom fixtures preserved.  

---

## 1. Master Ruler Fraction & Decimal Quick-Reference Guide

This table translates every architectural dimension and router setting into standard ruler markings (increments of 1/16" and 1/32") for direct layout with a standard woodworking ruler or tape measure:

| Component / Feature | Decimal Value | Standard Ruler Fraction | Ruler Reading Guide / Precision |
| :--- | :--- | :--- | :--- |
| **Plywood Sheet Thickness** | $0.250"$ | **1/4"** | Exactly on the 1/4" mark |
| **Groove (Dado) Depth in Decks** | $0.125"$ | **1/8"** | Exactly half the thickness of 1/4" plywood |
| **Groove (Dado) Width in Decks** | $0.250"$ | **1/4"** | Exactly matches 1/4" partition panel thickness |
| **Partition Wall Cut Height** | $8.250"$ | **8-1/4"** | 8" clear ceiling + 1/8" floor tongue + 1/8" ceiling tongue |
| **Clear Ceiling Height (per floor)** | $8.000"$ | **8"** | Exactly on 8" (8 ft real-life scale) |
| **1st Fl Divider 1 Groove (D1-A)** | $11.750"$ to $12.000"$ | **11-3/4" to 12"** | Centerline at **11-7/8"** ($11.875"$) from left carcass edge |
| **1st Fl Divider 2 Groove (D1-B)** | $23.500"$ to $23.750"$ | **23-1/2" to 23-3/4"**| Centerline at **23-5/8"** ($23.625"$) from left carcass edge |
| **2nd Fl Divider 1 Groove (D2-A)** | $6.250"$ to $6.500"$ | **6-1/4" to 6-1/2"** | Centerline at **6-3/8"** ($6.375"$) from left carcass edge |
| **2nd Fl Divider 2 Groove (D2-B)** | $19.000"$ to $19.250"$ | **19" to 19-1/4"**| Centerline at **19-1/8"** ($19.125"$) from left carcass edge |
| **Watertable Foundation Elevation** | $0.500"$ | **1/2"** | Exactly on the 1/2" mark |
| **Side Wall Front Corner Edge Rabbet (B1, B2)**| $0.250" \times 0.125"$ | **1/4" W × 1/8" D** | Runs vertical $Y = 0"$ to $16-1/2"$ along front edge for C1 lock-in |
| **Side Wall Deck Housing Rabbets/Dados (B1, B2)**| $0.250" \times 0.125"$ | **1/4" W × 1/8" D** | Runs horizontal $Z = 0"$ to $12"$ at $Y = 0"$, $Y = 8-1/4"$, $Y = 16-1/4"$ |
| **Deck Outer End Edge Rabbets (A1, A2, A3)** | $0.250" \times 0.125"$ | **1/4" W × 1/8" D** | Left ($X = 0$ to $1/4"$) & Right ($X = 31-3/4"$ to $32"$) deck ends |
| **Corner Board Stock** | $0.125" \times 0.375"$ | **1/8" × 3/8"** | Exterior corner casing strips |
| **Carcass Width** | $32.000"$ | **32"** | Exactly on 32" |
| **Carcass Depth** | $12.000"$ | **12"** | Exactly on 12" (1 ft) |
| **Two-Story Wall Height (to eave)** | $16.500"$ | **16-1/2"** | Exactly on 16-1/2" |
| **Gable Triangle Peak Height** | $8.400"$ | **8-3/8" (8.40")** | Roof rise above attic floor (reduced 20%; 54.5° pitch) |
| **Total Carcass Height to Peak** | $24.900"$ | **24-7/8" (24.90")** | Baseline to apex of gable ($16-1/2" + 8.40" = 24.90"$) |
| **Landscape Plinth (Level 0)** | $48.00" \times 32.00"$ | **48" × 32"** | 4 ft × 2 ft 8 in |
| **Front Roof Slope Panel (E1)** | $32.00" \times 12.043"$ | **32" × 12-1/16"** | 54.5° pitch, 8.40" peak rise, 1" front eave overhang, flush with 32" carcass gables |
| **Living Room Clear Width** | $11.500"$ | **11-1/2"** | Exactly on 11-1/2" |
| **Kitchen Clear Width** | $11.500"$ | **11-1/2"** | Exactly on 11-1/2" (Equal to Living!) |
| **Foyer Clear Width** | $8.000"$ | **8"** | Exactly on 8" |
| **Bathroom Clear Width** | $6.000"$ | **6"** | Exactly on 6" (Expanded for front tub!) |
| **Women Room Clear Width** | $12.500"$ | **12-1/2"** | Exactly on 12-1/2" |
| **Mans Room Clear Width** | $12.500"$ | **12-1/2"** | Exactly on 12-1/2" (Equal to Women!) |
| **Foyer Fireplace Hearth** | $5.000" \times 1.500"$ | **5" × 1-1/2"** | Height $= 4-1/2" \ (4.50")$ |
| **Staircase Width** | $2.000"$ | **2"** | Clear width along right wall |
| **Staircase Run (Length of Flight)**| $6.000"$ | **6"** | Lands at middle ($Z = 6"$), front at $Z = 0"$ |
| **Staircase Total Rise** | $8.250"$ | **8-1/4"** | 12 risers at $11/16" \ (0.6875")$ each |
| **Stair Tread Run (per step)** | $0.500"$ | **1/2"** | Exactly on 1/2" per step |
| **Stair Opening in 2nd Fl Deck (A2)**| $2.250" \times 6.000"$ | **2-1/4" × 6"** | Flushed to front wall ($Z = 0"$ to $6"$) |
| **Standard Window Hole Size (Rough Opening)**| $2.250" \times 5.000"$ | **2-1/4" × 5"** | Hole cutout for all 7 windows |
| **Standard Window Overall Frame (with Flange)**| $2.500" \times 5.250"$ | **2-1/2" × 5-1/4"** | Includes 1/8" (0.125") exterior flange lip |
| **Birch Front Door Rough Opening (Hole Size)** | $2.750" \times 6.750"$ | **2-3/4" × 6-3/4"** | $2.750" \times 6.750"$ ($X = 25-1/8"$ to $27-7/8"$) |
| **2nd Fl Inside Door Rough Opening** | $3.460" \times 6.290"$ | **3-7/16" × 6-5/16"** | $3.438" \times 6.313"$ |
| **1st Fl Cased Walkthrough Opening** | $3.000" \times 6.500"$ | **3" × 6-1/2"** | Open circulation (no doors) |
| **Rear Roof Slope Panel (E2)** | $32.00" \times 12.043"$ | **32" × 12-1/16"** | 27" × 8.40" triangular attic cutout (restores framed roofline from backview; flush with gables) |
| **Clear Wall Between Stairs & Window**| $1.875"$ | **1-7/8"** | Clean solid wall between stairs ($Z = 6"$) and window ($Z = 7-7/8"$) |

---

## 2. Master Rough Opening & Cartesian Cutout Schedule

Every cutout is measured from the bottom-left corner of the respective flat panel before assembly.  
> [!NOTE]
> On the partition walls (`D1-A`, `D1-B`, `D2-A`, `D2-B`), the total panel height is **8-1/4" (8.25")**. Because the bottom **1/8" (0.125")** seats down into the floor groove, the vertical cutouts for the walkthroughs and doors begin **1/8" above the bottom panel edge** ($Y = 1/8"$) so that the finished openings start exactly flush with the finished floor!

| Panel ID | Feature & Room | Ruler Cutout ($W \times H$) | Decimal Cutout | Horizontal Ruler Range | Vertical Ruler Range (Panel Face) | Centerline (Ruler) | Shop Notes |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| **C1 (Front)** | **Living Room Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | $X = 4-7/8"$ to $7-1/8"$ | $Y = 1-1/2"$ to $6-1/2"$ | **$X = 6"$** | Standard 1:12 window; 1/8" exterior flange |
| **C1 (Front)** | **Kitchen Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | $X = 14-7/8"$ to $17-1/8"$ | $Y = 1-1/2"$ to $6-1/2"$ | **$X = 16"$** | **Centered on house centerline** |
| **C1 (Front)** | **Birch Front Door** | **2-3/4" × 6-3/4"** | $2.75" \times 6.75"$ | $X = 25-1/8"$ to $27-7/8"$| $Y = 0"$ to $6-3/4"$ | **$X = 26-1/2"$** | **Lines up directly under Mans Room window!** |
| **C1 (Front)** | **Bathroom Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | $X = 2-1/8"$ to $4-3/8"$ | $Y = 9-3/4"$ to $14-3/4"$ | **$X = 3-1/4"$** | Centered in 6" Bathroom over front tub |
| **C1 (Front)** | **Women Room Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | $X = 11-5/8"$ to $13-7/8"$ | $Y = 9-3/4"$ to $14-3/4"$ | **$X = 12-3/4"$** | **Centered in 12-1/2" room (5-1/8" border each side!)** |
| **C1 (Front)** | **Mans Room Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | $X = 25-3/8"$ to $27-5/8"$ | $Y = 9-3/4"$ to $14-3/4"$ | **$X = 26-1/2"$** | **Lines up directly over Front Door below!** |
| **B1 (Left)** | **Living Side Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | $Z = 4-7/8"$ to $7-1/8"$ | $Y = 1-1/2"$ to $6-1/2"$ | **$Z = 6"$** | Centered in room depth |
| **B1 (Left)** | **Bathroom Side Wall** | **NONE (SOLID)** | — | — | — | — | **Zero side window on 2nd floor!** |
| **B2 (Right)**| **Foyer Side Window** | **2-1/4" × 5"** | $2.25" \times 5.00"$ | **$Z = 7-7/8"$ to $10-1/8"$**| $Y = 1-1/2"$ to $6-1/2"$ | **$Z = 9"$** | **Moved back! 1-7/8" clear of stairs!** |
| **B2 (Right)**| **Mans Side Wall** | **NONE (SOLID)** | — | — | — | — | **Zero side window on 2nd floor!** |
| **D1-A (Div)**| **Living ↔ Kitchen** | **3" × 6-1/2"** | $3.00" \times 6.50"$ | $Z = 1/2"$ to $3-1/2"$ | $Y = 1/8"$ to $6-5/8"$ | $Z = 2"$ | Open walkthrough; bottom 1/8" rests in groove |
| **D1-B (Div)**| **Kitchen ↔ Foyer** | **3" × 6-1/2"** | $3.00" \times 6.50"$ | $Z = 7-1/2"$ to $10-1/2"$ | $Y = 1/8"$ to $6-5/8"$ | $Z = 9"$ | Walkthrough at rear; leaves front for 5" fireplace |
| **D2-A (Div)**| **Bath ↔ Women Door** | **3-7/16" × 6-5/16"** | $3.46" \times 6.29"$ | $Z = 3-1/2"$ to $7"$ | $Y = 1/8"$ to $6-7/16"$ | $Z = 5-1/4"$ | Cutout at $Z=3-1/2"$ leaves front for tub & rear for toilet |
| **D2-B (Div)**| **Women ↔ Mans Door** | **3-7/16" × 6-5/16"** | $3.46" \times 6.29"$ | $Z = 1"$ to $4-7/16"$ | $Y = 1/8"$ to $6-7/16"$ | $Z = 2-11/16"$ | Cutout for authentic 1:12 inside door frame |
| **A2 (Deck)** | **Mans Stair Opening** | **2-1/4" × 6"** | $2.25" \times 6.00"$ | $X = 29-1/2"$ to $31-3/4"$ | $Z = 0"$ to $6"$ | — | Flushed against front wall along right gable |
| **E2 (Roof)** | **Attic Triangular Cutout** | **27" Base × 8.40" Alt** | $27.00" \times 8.40"$ | $X = 2-1/2"$ to $29-1/2"$ | Slope Run $0"$ to $8.40"$ | **$X = 16"$** | Restores rear roofline while giving full hands-on reach into attic |

---

## 3. 1/8" (0.125") Deep Groove (Dado) Routing & Alignment Specification

### 3.1 Engineering Rationale & Benefits
By routing **1/8" (0.125") deep grooves** into the floor and ceiling decks:
1. **Self-Squaring Automatic Alignment**: The partition panels drop directly into the straight channels. There is zero guessing, measuring, or slipping when clamping.
2. **Elimination of Clunky Interior Cleats**: Interior rooms remain completely clean and realistic at the floor and ceiling corners—no 1/4" wooden corner strips cluttering baseboards or crown molding.
3. **Rigid Structural Interlock**: The 1/8" tongue in the deck creates a mechanical interlocking box beam structure, preventing any long-term sagging or bowing of the 32" floor decks.
4. **Preservation of 8.00" Clear Ceiling**:
   - Bottom tongue in floor deck: $+0.125" \ (+1/8")$
   - Top tongue in ceiling deck: $+0.125" \ (+1/8")$
   - Net clear visible ceiling height: $8.000" \ (8")$
   - **Total Partition Panel Height**: $\mathbf{8.00" + 0.125" + 0.125" = 8.25" \ (8\text{-}1/4")}$.

---

### 3.2 Master Groove Layout & Fence Setting Schedule

All measurements are indexed from the **Left Outer Edge ($X = 0$)** of the 32.00" wide deck panels. Both edges of the deck should be marked with a reference line indicating the FRONT ($Z = 0$) to maintain identical orientation when cutting top and underside faces.

```
+======================================================================================================+
| MASTER DECK GROOVE (DADO) SCHEDULE (1/8" DEEP x 1/4" WIDE x 12" LONG)                                |
+======================================================================================================+
| Deck Panel | Face       | Target Wall | Ruler Range (X)     | Centerline | Table Saw / Router Fence  |
+------------+------------+-------------+---------------------+------------+---------------------------+
| A1 (Base)  | Top Face   | D1-A (Liv)  | 11-3/4" to 12"      | 11-7/8"    | Fence at 11-3/4" (0.250") |
| A1 (Base)  | Top Face   | D1-B (Foy)  | 23-1/2" to 23-3/4"  | 23-5/8"    | Fence at 23-1/2" (0.250") |
+------------+------------+-------------+---------------------+------------+---------------------------+
| A2 (2nd Fl)| Underside  | D1-A Top    | 11-3/4" to 12"      | 11-7/8"    | Fence at 11-3/4" (Ceiling)|
| A2 (2nd Fl)| Underside  | D1-B Top    | 23-1/2" to 23-3/4"  | 23-5/8"    | Fence at 23-1/2" (Ceiling)|
| A2 (2nd Fl)| Top Face   | D2-A (Bath) | 6-1/4" to 6-1/2"    | 6-3/8"     | Fence at 6-1/4"  (Floor)  |
| A2 (2nd Fl)| Top Face   | D2-B (Bed)  | 19" to 19-1/4"      | 19-1/8"    | Fence at 19"     (Floor)  |
+------------+------------+-------------+---------------------+------------+---------------------------+
| A3 (Attic) | Underside  | D2-A Top    | 6-1/4" to 6-1/2"    | 6-3/8"     | Fence at 6-1/4"  (Ceiling)|
| A3 (Attic) | Underside  | D2-B Top    | 19" to 19-1/4"      | 19-1/8"    | Fence at 19"     (Ceiling)|
+======================================================================================================+
```

---

### 3.3 Exterior Gable Side Wall Edge Rabbet Engineering (B1 & B2)

To achieve heirloom-grade structural rigidity and invisible exterior seams, **1/4" wide × 1/8" deep edge rabbets** are machined into the exterior gable side walls (`B1` and `B2`) and the horizontal floor decks (`A1`, `A2`, `A3`).

```
========================================================================================================
SIDE WALL & DECK EDGE RABBET ARCHITECTURE (CROSS-SECTION VIEWS)
========================================================================================================
1. FRONT VERTICAL CORNER JOINT (B1/B2 meeting Front Facade C1):
   Looking Down from Above (Top-Down Cross-Section at Corner):
       Outside of House (Left/Right Side)
       ┌───────────────────────────────┐
       │ Left/Right Gable Wall (B1/B2) │
       │ (1/4" Thick Baltic Birch)     │
       └──────────────┬────────────────┘
                      │ ◄── 1/8" Shoulder
                      │     ┌───────────────────────────────────────────────┐
                      └─────┤ Front Facade Wall (C1) (1/4" Thick)           │
        1/4" Rabbet ──►     │ (Seats 1/8" into B1/B2; raw edge concealed!)   │
                            └───────────────────────────────────────────────┘
                                                ▲
                                                └── Front of Dollhouse

2. HORIZONTAL DECK HOUSING JOINTS (B1/B2 meeting Floor Decks A1, A2, A3):
   Looking at Inside Face of Left/Right Gable Wall:
       ▲ Y = 16-1/2" (Eave line) ── [Attic Deck A3 Dado: 1/4" W x 1/8" D at Y = 16-1/4" to 16-1/2"]
       │
       │ Y = 8-1/4" (2nd Fl line) ─ [2nd Floor Deck A2 Dado: 1/4" W x 1/8" D at Y = 8-1/4" to 8-1/2"]
       │
       ▼ Y = 0" (Base Plate) ────── [Base Deck A1 Rabbet: 1/4" W x 1/8" D at Y = 0" to 1/4"]
       ◄────────────── Z = 12" (Depth) ──────────────►
========================================================================================================
```

#### 3.3.1 Vertical Front Corner Edge Rabbet (On B1 and B2)
* **Location**: Machined down the front vertical edge ($Z = 0$) on the **inside face** of both Left Gable `B1` and Right Gable `B2`.
* **Ruler Dimensions**: Exactly **1/4" Wide (0.250") × 1/8" Deep (0.125")**.
* **Vertical Run**: From the bottom baseline ($Y = 0"$) up to the eave transition line ($Y = 16-1/2" / 16.50"$) where the roof pitch begins.
* **Architectural Purpose**:
  - The left and right vertical edges of Front Facade `C1` drop into these 1/8" recessed shoulders.
  - **Raw Edge Concealment**: From the side of the house, the raw edge of the front plywood facade is completely hidden behind the 1/8" outer lip of the gable wall.
  - **Light-Tight Interlock**: Prevents miniature interior lighting from escaping through corner gaps.
  - **Automatic Squaring**: The 90° shoulder mechanically squares the carcass during front wall installation.

#### 3.3.2 Horizontal Deck Housing Rabbets & Dados (On B1 and B2)
Machining horizontal channels across the inside face of `B1` and `B2` supports the floor decks directly without requiring any interior support cleats:
1. **Base Deck Rabbet (`A1`)**: Cut a $1/4" \text{ wide} \times 1/8" \text{ deep}$ step along the bottom edge ($Y = 0"$ to $1/4"$) across the full 12" width ($Z = 0"$ to $12"$). The Base Plate `A1` seats into this bottom shoulder.
2. **Second Floor Deck Dado (`A2`)**: Cut a $1/4" \text{ wide} \times 1/8" \text{ deep}$ horizontal groove from $Y = 8-1/4"$ to $8-1/2"$ ($Z = 0"$ to $12"$). Deck `A2` slides directly into this channel.
3. **Attic Floor Deck Dado (`A3`)**: Cut a $1/4" \text{ wide} \times 1/8" \text{ deep}$ horizontal groove from $Y = 16-1/4"$ to $16-1/2"$ ($Z = 0"$ to $12"$). Deck `A3` slides directly into this channel.

#### 3.3.3 Companion Outer End Edge Rabbets (On Decks A1, A2, A3)
* **Location**: Left outer edge ($X = 0"$ to $1/4"$) and Right outer edge ($X = 31-3/4"$ to $32"$) across the 12" depth ($Z = 0"$ to $12"$).
* **Ruler Dimensions**: **1/4" Wide × 1/8" Deep**.
* **Deck Faces**:
  - `A1` (Base Plate): Machined on the **Top Face**.
  - `A2` (2nd Floor Deck): Machined on **Both Top Face & Underside**.
  - `A3` (Attic Floor Deck): Machined on the **Underside**.
* **Tongue-and-Rabbet Lock**: When both deck ends and side walls are rabbeted, they form an interlocking ship-lap joint that can be glued and clamped with zero fasteners!

---

### 3.4 Workshop Execution & Tooling Instructions for Rabbets & Dados

#### Method 1: Table Saw with Sacrificial Sub-Fence (Fastest for Edge Rabbets)
1. **Attach Auxiliary Fence**: Clamp or screw a sacrificial piece of 3/4" scrap plywood or MDF to your table saw rip fence.
2. **Bury the Blade**: With the saw blade running at 1/8" (0.125") height, slowly slide the rip fence over until the outer teeth of the 1/8" blade cut slightly into the sacrificial wood, leaving exactly **1/4" (0.250")** of blade kerf exposed between the blade and the fence face.
3. **Cut Vertical Corner Rabbet**: Lay side wall `B1` flat on the saw table with its inside face up and its front vertical edge against the fence. Feed smoothly using a push block to cut the 1/4" W × 1/8" D rabbet in a single, dead-accurate pass! Repeat for `B2`.
4. **Cut Deck Outer End Rabbets**: Use the same fence setup to cut the 1/4" W × 1/8" D end rabbets on `A1`, `A2`, and `A3` by feeding the 12" ends against the fence with a miter gauge.

#### Method 2: Router Table with Bearing-Guided Rabbeting Bit
1. **Bit & Bearing Setup**: Chuck a bearing-guided rabbeting bit equipped with the bearing that yields a **1/4" depth of cut**.
2. **Height Adjustment**: Adjust bit height above table surface to exactly **1/8" (0.125")**.
3. **Routing Sequence**: Feed the workpiece from right to left, keeping firm, flat downward pressure against the tabletop and fence. The pilot bearing controls the exact 1/4" width automatically.

#### Method 3: Router Table with 1/4" Down-Cut Spiral Bit (For Internal Dados & Grooves)
1. Chuck a 1/4" solid carbide down-cut spiral bit set to 1/8" cutting height.
2. Set router fence to the respective deck baseline ($0"$, $8-1/4"$, $16-1/4"$) or divider centerline.
3. Use a featherboard to maintain uniform 1/8" depth across the full cut length without tearout.

#### The "Test Scrap" Fitting Rule
> [!IMPORTANT]
> **Verify Fit with Plywood Offcut**: Baltic birch plywood imported as 1/4" is manufactured to metric specifications (nominal 6 mm = $0.236"$). Always route a short test groove/rabbet into a piece of scrap material and test-fit an offcut of your actual wall or deck panel. The panel should slide smoothly with light thumb pressure and stand upright on its own without wobbling or binding!

---

## 4. Visual Cut Sheet & Shop Blueprint Gallery (All 10 Architectural Drawings)

Every individual piece of the 1:12 scale dollhouse has a dedicated high-resolution shop blueprint drawing showing all exterior cut dimensions, exact cutout windows/doors, table saw fence settings, and routed 1/8" (0.125") grooves and rabbets. All dimensions are provided in standard ruler fractions and decimals.

```
========================================================================================================
SHOP BLUEPRINT INDEX (11 MASTER CUT SHEETS)
========================================================================================================
1. Cut 01: Base Platform Deck A1 (Top Grooves & Outer End Rabbets)
2. Cut 02: Second Floor Deck A2 (Dual 2-Sided Grooves & Mans Stair Well Opening)
3. Cut 03: Attic Floor Deck A3 (Underside Ceiling Grooves & Clean Solid Attic)
4. Cut 04: Left Exterior Gable Wall B1 (Vertical Front Corner Rabbet, 3 Deck Dados & 2-1/4" x 5" Living Window)
5. Cut 05: Right Exterior Gable Wall B2 (Vertical Front Corner Rabbet, 3 Deck Dados & 2-1/4" x 5" Offset Foyer Window)
6. Cut 06: Front Facade Wall C1 (6 Aligned Cutouts: 5 Identical 2-1/4" x 5" Windows + Birch Door)
7. Cut 07: 1st Floor Partitions D1-A & D1-B (8-1/4" Cut Height, 1/8" Tongues & Cased Walkthroughs)
8. Cut 08: 2nd Floor Partitions D2-A & D2-B (8-1/4" Cut Height, 1/8" Tongues & Authentic 1:12 Inside Doors)
9. Cut 09: Main Roof Slopes E1 & E2 (Front Solid & Rear Triangular Attic Cutout, 54.5° Pitch)
10. Cut 10: Master Carcass Interlock & Cross-Section Overview (Full Structural Exploded Assembly, 24.90" Height)
11. Cut 11: Master 2' × 4' Project Panel Nesting & Material Take-Off Blueprint (6 Sheets)
========================================================================================================
```

---

### 4.1 Cut Sheet 01 — Base Platform Deck `A1` (Level 1)
* **Raw Panel Cut Size**: **32" Wide × 12" Deep (32.00" × 12.00")** (clean rectangular plate).
* **1/8" Routed Grooves (Top Face)**:
  - **D1-A Groove (Living / Kitchen Divider)**: From $X = 11-3/4"$ to $12"$ ($11.75"$ to $12.00"$). Centerline = **11-7/8"** ($11.875"$).
  - **D1-B Groove (Kitchen / Foyer Divider)**: From $X = 23-1/2"$ to $23-3/4"$ ($23.50"$ to $23.75"$). Centerline = **23-5/8"** ($23.625"$).
* **1/8" Edge Rabbets**: Left outer end ($X = 0"$ to $1/4"$) and Right outer end ($X = 31-3/4"$ to $32"$) routed **1/4" W × 1/8" D** to seat into Gable Walls `B1` and `B2`.
* **Room Net Spans**: Living Room = **11-1/2" (11.50")**, Kitchen = **11-1/2" (11.50")**, Foyer = **8" (8.00")**.
* **Blueprint Image**: [cut_01_A1_base_deck.png](file:///c:/code2026/house/images/cut_01_A1_base_deck.png)  
  ![Cut 01: Base Deck A1](images/cut_01_A1_base_deck.png)

---

### 4.2 Cut Sheet 02 — Second Floor Deck `A2` (Dual-Sided Machining & Stair Well)
* **Raw Panel Cut Size**: **32" Wide × 12" Deep (32.00" × 12.00")**.
* **View 1: Top Face (2nd Floor Flooring & Partitions)**:
  - **D2-A Groove (Bathroom / Women Room Divider)**: From $X = 6-1/4"$ to $6-1/2"$ ($6.25"$ to $6.50"$). Centerline = **6-3/8"** ($6.375"$).
  - **D2-B Groove (Women Room / Mans Room Divider)**: From $X = 19"$ to $19-1/4"$ ($19.00"$ to $19.25"$). Centerline = **19-1/8"** ($19.125"$).
  - **Mans Room Stair Opening**: **2-1/4" Wide × 6" Long (2.25" × 6.00")** along front-right corner ($X = 29-1/2"$ to $31-3/4"$, $Z = 0"$ to $6"$).
  - *Open Hallway Clearance*: Leaves a generous **10-1/2" (10.50")** of solid floor between `D2-B` and the stair well!
* **View 2: Underside Face (1st Floor Ceiling Grooves)**:
  - **D1-A Ceiling Groove**: From $X = 11-3/4"$ to $12"$ ($11.75"$ to $12.00"$).
  - **D1-B Ceiling Groove**: From $X = 23-1/2"$ to $23-3/4"$ ($23.50"$ to $23.75"$).
* **Blueprint Image**: [cut_02_A2_2nd_floor_deck.png](file:///c:/code2026/house/images/cut_02_A2_2nd_floor_deck.png)  
  ![Cut 02: 2nd Floor Deck A2](images/cut_02_A2_2nd_floor_deck.png)

---

### 4.3 Cut Sheet 03 — Attic Floor Deck `A3` (Underside Ceiling Grooves)
* **Raw Panel Cut Size**: **32" Wide × 12" Deep (32.00" × 12.00")**.
* **Underside Ceiling Grooves**:
  - **D2-A Top Groove**: From $X = 6-1/4"$ to $6-1/2"$ ($6.25"$ to $6.50"$) for Bathroom / Women ceiling joint.
  - **D2-B Top Groove**: From $X = 19"$ to $19-1/4"$ ($19.00"$ to $19.25"$) for Women / Mans ceiling joint.
* **Solid Deck Design**: Completely continuous and solid with zero chimney cutouts. Outer ends have 1/4" W × 1/8" D rabbets.
* **Blueprint Image**: [cut_03_A3_attic_floor_deck.png](file:///c:/code2026/house/images/cut_03_A3_attic_floor_deck.png)  
  ![Cut 03: Attic Floor Deck A3](images/cut_03_A3_attic_floor_deck.png)

---

### 4.4 Cut Sheet 04 — Left Exterior Gable Side Wall `B1`
* **Raw Panel Cut Size**: **12" Wide × 24.90" Total Height (12.00" × 24.90" / 24-7/8")** (16-1/2" wall to eave, 8.40" gable peak rise, 54.5° pitch).
* **1/8" Edge Rabbet & Dados (Inside Face)**:
  - **Vertical Front Corner Rabbet**: **1/4" W × 1/8" D** running $Y = 0"$ to $16-1/2"$ along the front vertical edge ($Z = 0$). Front Facade `C1` seats 1/8" into this shoulder!
  - **Base Deck Housing Dado (`A1`)**: **1/4" W × 1/8" D** at $Y = 0"$ to $1/4"$.
  - **2nd Floor Deck Housing Dado (`A2`)**: **1/4" W × 1/8" D** at $Y = 8-1/4"$ to $8-1/2"$.
  - **Attic Deck Housing Dado (`A3`)**: **1/4" W × 1/8" D** at $Y = 16-1/4"$ to $16-1/2"$.
* **Cutouts**:
  - **Living Room Side Window**: **2-1/4" W × 5" H (2.25" × 5.00")** centered in depth at **Z = 6" (6.00")** ($Z = 4-7/8"$ to $7-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).
  - **2nd Floor Bathroom Wall**: **SOLID (ZERO SIDE WINDOWS)** per user directive.
* **Blueprint Image**: [cut_04_B1_left_gable_wall.png](file:///c:/code2026/house/images/cut_04_B1_left_gable_wall.png)  
  ![Cut 04: Left Gable Wall B1](images/cut_04_B1_left_gable_wall.png)

---

### 4.5 Cut Sheet 05 — Right Exterior Gable Side Wall `B2`
* **Raw Panel Cut Size**: **12" Wide × 24.90" Total Height (12.00" × 24.90" / 24-7/8")** (16-1/2" wall to eave, 8.40" gable peak rise, 54.5° pitch).
* **1/8" Edge Rabbet & Dados (Inside Face)**:
  - **Vertical Front Corner Rabbet**: **1/4" W × 1/8" D** running $Y = 0"$ to $16-1/2"$ along front inside edge.
  - **Three Horizontal Deck Dados**: At $Y = 0"$ to $1/4"$ (`A1`), $Y = 8-1/4"$ to $8-1/2"$ (`A2`), and $Y = 16-1/4"$ to $16-1/2"$ (`A3`).
* **Cutouts**:
  - **Foyer Side Window (Offset)**: **2-1/4" W × 5" H (2.25" × 5.00")** moved closer to the back at **Z = 9" (9.00")** ($Z = 7-7/8"$ to $10-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).
  - **Zero Stair Overlap**: Leaves **1-7/8" (1.875") of solid clear wall** between the stairs landing ($Z = 6"$) and the window frame!
  - **2nd Floor Mans Room Wall**: **SOLID (ZERO SIDE WINDOWS)** per user directive.
* **Blueprint Image**: [cut_05_B2_right_gable_wall.png](file:///c:/code2026/house/images/cut_05_B2_right_gable_wall.png)  
  ![Cut 05: Right Gable Wall B2](images/cut_05_B2_right_gable_wall.png)

---

### 4.6 Cut Sheet 06 — Front Facade Wall Plate `C1`
* **Raw Panel Cut Size**: **32" Wide × 16-1/2" High (32.00" × 16.50")**.
* **Outer Edge Nesting**: Both left and right outer ends drop 1/8" into the vertical corner rabbets of `B1` and `B2`, hiding all raw plywood edges.
* **6 Architectural Cutouts (All 5 Windows are Identical 2-1/4" W × 5" H / 2.25" × 5.00")**:
  1. **Living Room Window (1st Fl)**: **2-1/4" W × 5" H (2.25" × 5.00")** centered at **X = 6" (6.00")** ($X = 4-7/8"$ to $7-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).
  2. **Kitchen Window (1st Fl)**: **2-1/4" W × 5" H (2.25" × 5.00")** centered at **X = 16" (16.00")** ($X = 14-7/8"$ to $17-1/8"$, $Y = 1-1/2"$ to $6-1/2"$).
  3. **Birch Front Door (Foyer)**: **2-3/4" W × 6-3/4" H (2.75" × 6.75")** centered at **X = 26-1/2" (26.50")** ($X = 25-1/8"$ to $27-7/8"$, $Y = 0"$ to $6-3/4"$).
  4. **Bathroom Window (2nd Fl)**: **2-1/4" W × 5" H (2.25" × 5.00")** centered at **X = 3-1/4" (3.25")** ($X = 2-1/8"$ to $4-3/8"$, $Y = 9-3/4"$ to $14-3/4"$) directly over front clawfoot tub.
  5. **Women Room Window (2nd Fl)**: **2-1/4" W × 5" H (2.25" × 5.00")** centered at **X = 12-3/4" (12.75")** ($X = 11-5/8"$ to $13-7/8"$, $Y = 9-3/4"$ to $14-3/4"$) (**centered in 12-1/2" room with equal 5-1/8" wall borders!**).
  6. **Mans Room Window (2nd Fl)**: **2-1/4" W × 5" H (2.25" × 5.00")** centered at **X = 26-1/2" (26.50")** ($X = 25-3/8"$ to $27-5/8"$, $Y = 9-3/4"$ to $14-3/4"$) (**perfect vertical alignment directly over Front Door!**).
* **Blueprint Image**: [cut_06_C1_front_facade.png](file:///c:/code2026/house/images/cut_06_C1_front_facade.png)  
  ![Cut 06: Front Facade C1](images/cut_06_C1_front_facade.png)

---

### 4.7 Cut Sheet 07 — 1st Floor Partitions `D1-A` & `D1-B`
* **Raw Panel Cut Size**: **12" Wide × 8-1/4" High (12.00" × 8.25")** (Qty: 2).
* **The 8-1/4" (8.25") Height Rule**:
  - $8.00" \text{ (Visible Clear Ceiling)} + 0.125" \text{ (Floor Tongue in A1)} + 0.125" \text{ (Ceiling Tongue in A2)} = \mathbf{8.25" \ (8\text{-}1/4")}$.
  - When seated 1/8" deep into both decks, exactly 8.00" of finished wall height is exposed in every room!
* **Cutouts**:
  - **D1-A (Living / Kitchen)**: Open cased walkthrough **3" W × 6-1/2" H (3.00" × 6.50")** at $Z = 1/2"$ to $3-1/2"$ (no interior doors).
  - **D1-B (Kitchen / Foyer)**: 5" × 1-1/2" Fireplace mounting zone at front ($Z = 1/2"$ to $5-1/2"$); open walkthrough at rear ($Z = 7-1/2"$ to $10-1/2"$).
* **Blueprint Image**: [cut_07_D1_1st_fl_partitions.png](file:///c:/code2026/house/images/cut_07_D1_1st_fl_partitions.png)  
  ![Cut 07: 1st Fl Partitions D1](images/cut_07_D1_1st_fl_partitions.png)

---

### 4.8 Cut Sheet 08 — 2nd Floor Partitions `D2-A` & `D2-B`
* **Raw Panel Cut Size**: **12" Wide × 8-1/4" High (12.00" × 8.25")** (Qty: 2).
* **Door Cutouts for Authentic 1:12 Inside Doors**:
  - **D2-A (Bath / Women)**: Rough cutout **3-7/16" W × 6-5/16" H (3.46" × 6.29")** positioned at $Z = 3-1/2"$ to $7"$. Leaves front $3-1/2"$ for bathtub against front wall, allows sink directly opposite door on solid left wall, and leaves rear $5"$ for toilet tucked behind door swing.
  - **D2-B (Women / Mans)**: Rough cutout **3-7/16" W × 6-5/16" H** at $Z = 1"$ to $4-7/16"$.
* **Door Threshold Scribing Rule**: Scribe the bottom of the doorway cutout **1/8" (0.125") above the bottom panel edge**. Because the bottom 1/8" sinks into the deck groove, the door threshold will end up perfectly flush with the finished floor!
* **Blueprint Image**: [cut_08_D2_2nd_fl_partitions.png](file:///c:/code2026/house/images/cut_08_D2_2nd_fl_partitions.png)  
  ![Cut 08: 2nd Fl Partitions D2](images/cut_08_D2_2nd_fl_partitions.png)

---

### 4.9 Cut Sheet 09 — Roof Panels `E1` & `E2` (Front Slope & Rear Open-View Slope)
* **Raw Panel Cut Sizes**:
  - **Panel E1 (Front Roof Slope)**: **32" Wide × 12-1/16" Slope Run (32.00" × 12.04")** (Qty: 1) — continuous solid rectangular panel (54.5° pitch, 8.40" peak rise, 1" front eave overhang, flush with 32" carcass gables).
  - **Panel E2 (Rear Roof Slope)**: **32" Wide × 12-1/16" Slope Run (32.00" × 12.04")** (Qty: 1) with **27" Wide Base × 8.40" Altitude Triangular Cutout** ($X = 2-1/2"$ to $29-1/2"$).
* **Rear Open-View Engineering**:
  - Restores the authentic craftsman gable roofline and eave framing when viewed from the open rear, leaving rigid 2-1/2" side wings and a 3-5/8" solid ridge header.
  - Maintains direct, unobstructed hands-on reach into the finished 3rd-floor cathedral attic ($8.40"$ peak rise above attic deck) for arranging furniture and play.
* **Blueprint Image**: [cut_09_E1_E2_roof_panels.png](file:///c:/code2026/house/images/cut_09_E1_E2_roof_panels.png)  
  ![Cut 09: Roof Panels E1 and E2](images/cut_09_E1_E2_roof_panels.png)

---

### 4.10 Cut Sheet 10 — Master Carcass Interlock & Cross-Section Overview
* **Complete System Cross-Section**: Illustrates how Base Deck `A1`, 2nd Floor Deck `A2`, Attic Deck `A3`, Gable Walls `B1`/`B2` ($12" \times 24.90"$), Partitions `D1`/`D2` ($12" \times 8-1/4"$), and Roof Slopes `E1`/`E2` interlock into a monolithic, self-squaring carcass with zero exterior cleats, 24.90" total carcass height, and exact 8.00" clear room ceilings.
* **Blueprint Image**: [cut_10_master_interlock_overview.png](file:///c:/code2026/house/images/cut_10_master_interlock_overview.png)  
  ![Cut 10: Master Interlock Overview](images/cut_10_master_interlock_overview.png)

---

### 4.11 Cut Sheet 11 — Master 2' × 4' Project Panel Nesting & Material Take-Off Blueprint (6 Sheets)
* **Complete 12-Panel Nesting Across SIX (6) 2' × 4' Project Panels**:
  - Many woodworkers cannot locate high-quality, cabinet-grade 1/4" plywood in giant 4' × 8' sheets, or cannot safely transport or handle 4' × 8' sheets on home table saws.
  - All 12 house carcass, roof, and partition panels nest with zero overlap across **SIX (6) 2' × 4' (24" × 48") Handy Project Panels** of 1/4" Baltic Birch Plywood!
* **Sheet-by-Sheet Allocation**:
  - **Sheet 1 (24" × 48")**: `E1` Front Roof Slope ($34" \times 12.04"$) + `D1-A` Living/Kitchen Partition ($12" \times 8.25"$) + `D1-B` Kitchen/Foyer Partition ($12" \times 8.25"$). Leaves $14" \times 12"$ and $24" \times 3.7"$ craft offcuts.
  - **Sheet 2 (24" × 48")**: `E2` Rear Roof Slope ($34" \times 12.04"$) + `D2-A` Bath/Women Partition ($12" \times 8.25"$) + `D2-B` Women/Mans Partition ($12" \times 8.25"$). Leaves $14" \times 12"$ and $24" \times 3.7"$ craft offcuts.
  - **Sheet 3 (24" × 48")**: `C1` Front Facade Wall Plate ($32" \times 16.50"$) + solid **$15-7/8" \times 24"$ craft panel** ($381\text{ sq in}$).
  - **Sheet 4 (24" × 48")**: `A1` Base Platform Deck ($32" \times 12"$) + `A2` Second Floor Deck ($32" \times 11-7/8"$) + solid **$15-7/8" \times 24"$ craft panel**.
  - **Sheet 5 (24" × 48")**: `B1` Left Exterior Gable Wall ($12" \times 24.90"$) + `B2` Right Exterior Gable Wall ($12" \times 24.90"$) + massive **$23" \times 24"$ reserve panel** ($551\text{ sq in}$!).
  - **Sheet 6 (24" × 48")**: `A3` Attic Floor Deck ($32" \times 12"$) + full **$32" \times 11-7/8"$ pristine craft panel** + **$15-7/8" \times 24"$ test dado panel**.
* **Shop Cutting Efficiency & Workshop Safety**:
  - **Vehicle Transport**: 2' × 4' handy panels fit easily into the back seat or trunk of any standard car.
  - **Table Saw Safety**: Maneuvering a 2' × 4' panel on a home table saw is safe, accurate, and manageable for a solo woodworker without cumbersome outfeed stands or helper tables.
  - **Bonus Workshop Craft Reserve**: Total plywood purchased is $48.00\text{ sq ft}$; net finished carcass uses $24.22\text{ sq ft}$, yielding **23.78 sq ft of premium cabinet-grade birch offcuts** for staircase stringers, fireplace framing, roof cleats, and test router dados!
* **Blueprint Image**: [cut_11_plywood_4x8_sheet_layout.png](file:///c:/code2026/house/images/cut_11_plywood_4x8_sheet_layout.png)  
  ![Cut 11: Master 2x4 Project Panel Nesting Layout](images/cut_11_plywood_4x8_sheet_layout.png)

---

## 5. Master 10-Phase Construction & Assembly Order

```
========================================================================================================
RECOMMENDED MASTER BUILD FLOW
========================================================================================================
[Phase 1: Stock Breakdown] ──> [Phase 2: Bench Grooving & Cutouts] ──> [Phase 3: Pre-Finishing]
                                                                                │
                                                                                ▼
[Phase 6: Hearth & Stairs] <── [Phase 5: 1st Fl Carcass & Walls] <── [Phase 4: Base Foundation]
         │
         ▼
[Phase 7: 2nd Fl & Bath] ──> [Phase 8: Attic & Roof] ──> [Phase 9: Windows/Doors] ──> [Phase 10: Landscaping]
========================================================================================================
```

#### Phase 1: Stock Preparation & Project Panel Breakdown
1. **Material Inspection & Procurement**:
   - Purchase **Six (6) Handy Project Panels of 1/4" Baltic Birch Plywood (2 ft × 4 ft / 24" × 48")**.
   - Verify panels are flat, void-free, and smooth on both faces.
   - For grounds plinth `A0` ($48" \times 32"$), purchase 1/2" MDF or plywood.
2. **Break Down Rectangular Blanks per Sheet Nesting (Cut 11)**:
   - **Sheet 1**: Cut `E1` Front Roof ($32" \times 12-1/16"$), `D1-A` ($12" \times 8-1/4"$), `D1-B` ($12" \times 8-1/4"$).
   - **Sheet 2**: Cut `E2` Rear Roof ($32" \times 12-1/16"$), `D2-A` ($12" \times 8-1/4"$), `D2-B` ($12" \times 8-1/4"$).
   - **Sheet 3**: Cut `C1` Front Facade ($32" \times 16-1/2"$); set aside solid $15-7/8" \times 24"$ craft panel.
   - **Sheet 4**: Cut Base Deck `A1` ($32" \times 12"$) and 2nd Fl Deck `A2` ($32" \times 11-7/8"$); set aside solid $15-7/8" \times 24"$ craft panel.
   - **Sheet 5**: Cut Left Gable `B1` ($12" \times 24.90"$) and Right Gable `B2` ($12" \times 24.90"$); set aside massive $23" \times 24"$ reserve panel.
   - **Sheet 6**: Cut Attic Deck `A3` ($32" \times 12"$); yields a full $32" \times 11-7/8"$ pristine craft panel plus $15-7/8" \times 24"$ test dado panel.

---

### Phase 2: Bench Grooving & Cutout Phase (Crucial: Work Flat BEFORE Assembly!)
> [!IMPORTANT]
> **Never attempt to route grooves or cut windows after carcass assembly.** All routing, grooving, and piercing must occur flat on the workbench.

1. **Route 1/8" Floor & Ceiling Grooves (Dados)**:
   - On top of `A1`: Route two $1/4" \times 1/8"$ grooves at $X = 11-3/4"$ (for `D1-A`) and $X = 23-1/2"$ (for `D1-B`).
   - On underside of `A2`: Route two $1/4" \times 1/8"$ grooves at $X = 11-3/4"$ and $X = 23-1/2"$ (1st fl ceiling channels).
   - On top of `A2`: Route two $1/4" \times 1/8"$ grooves at $X = 6-1/4"$ (for `D2-A`) and $X = 19"$ (for `D2-B`).
   - On underside of `A3`: Route two $1/4" \times 1/8"$ grooves at $X = 6-1/4"$ and $X = 19"$ (2nd fl ceiling channels).
2. **Route 1/8" Side Wall Edge Rabbets & Dados**:
   - On Left Gable `B1` & Right Gable `B2`: Route a **1/4" W × 1/8" D vertical front corner rabbet** along the front inside edge ($Z = 0$, $Y = 0"$ to $16-1/2"$) to interlock Front Facade `C1`.
   - On `B1` & `B2`: Route horizontal **1/4" W × 1/8" deck housing rabbets/dados** across the inside face at $Y = 0" \text{ to } 1/4"$ (`A1` base), $Y = 8-1/4" \text{ to } 8-1/2"$ (`A2` 2nd fl), and $Y = 16-1/4" \text{ to } 16-1/2"$ (`A3` attic).
   - On Decks `A1`, `A2`, `A3`: Route **1/4" W × 1/8" D outer end edge rabbets** across left ($X = 0 \text{ to } 1/4"$) and right ($X = 31-3/4" \text{ to } 32"$) ends.
3. **Execute Architectural Cutouts**:
   - Front Facade `C1`: Birch Front Door ($2-3/4" \times 6-3/4"$) centered at $X = 26-1/2"$, plus 5 identical standard windows ($2-1/4" \times 5"$) at Living ($X = 6"$), Kitchen ($X = 16"$), Bathroom ($X = 3-1/4"$), Women Room ($X = 12-3/4"$), and Mans Room ($X = 26-1/2"$).
   - Left Gable `B1`: Living Room window ($2-1/4" \times 5"$) centered at $Z = 6"$. (Leave 2nd floor solid).
   - Right Gable `B2`: Foyer window ($2-1/4" \times 5"$) centered at $Z = 9"$. (Leaves 1-7/8" clear of stairs; leave 2nd floor solid).
   - 1st Fl Dividers `D1-A` & `D1-B`: Walkthrough openings ($3" \times 6-1/2"$), offset $1/8"$ up from bottom panel edge.
   - 2nd Fl Dividers `D2-A` & `D2-B`: Doorway cutouts ($3-7/16" \times 6-5/16"$), offset $1/8"$ up from bottom panel edge (cutout at $Z = 3-1/2"$ on `D2-A`).
   - 2nd Fl Deck `A2`: Stair opening ($2-1/4" \times 6"$) along right front corner ($X = 29-1/2"$ to $31-3/4"$, $Z = 0"$ to $6"$).
   - Rear Roof Slope `E2`: Cutout **27" Base × 8.40" Altitude Triangular Cutout** ($X = 2-1/2"$ to $29-1/2"$) along slope, leaving 2-1/2" left/right wings and a 3-5/8" solid ridge header.

---

### Phase 3: Pre-Finishing, Interior Walls & Flooring
1. **Ceilings**: Paint underside of `A2` (1st fl ceiling) and `A3` (2nd fl ceiling) flat ceiling white. Tape off the 1/4" routed grooves so bare wood is preserved for glue!
2. **Interior Wall Finishing**: Paint or wallpaper inside surfaces of `B1`, `B2`, `C1`, and both faces of `D1-A`, `D1-B`, `D2-A`, `D2-B`. Keep top and bottom 1/8" tongues bare wood.
3. **Deck Flooring Installation**:
   - Scribe and adhere miniature hardwood planking to Living Room and Kitchen zones on `A1`.
   - Adhere checkerboard tile flooring to Foyer zone on `A1`.
   - Install hardwood flooring to Women and Mans room zones on `A2`.
   - Install ceramic mosaic tile to Bathroom zone on `A2`.
   - *Ensure flooring does not cover or encroach upon the 1/4" routed grooves!*

---

### Phase 4: Base Foundation & Sub-Structure Assembly
1. **Ground Plinth (`A0`)**: Sand edges of $48" \times 32"$ plinth. Mark out centered $32" \times 12"$ house footprint.
2. **House Base (`A1`)**:
   - Build clean $32" \times 12"$ rectangular platform plate `A1`.
   - Attach $1/2"$ tall perimeter cleats beneath `A1` to form raised watertable foundation rim.
   - Texture rim with faux stone/brick mortar effect.
3. **Secure Base Plate**: Glue and clamp `A1` permanently onto `A0`.

---

### Phase 5: First Floor Carcass & Partition Slide-In Assembly
1. **Erect Exterior Walls with Interlocking Edge Rabbets**:
   - Apply wood glue into the bottom edge rabbets ($1/4" \times 1/8"$) of Left Gable `B1` and Right Gable `B2`.
   - Seat `B1` and `B2` over the outer ends of Base Deck `A1`.
   - Apply wood glue into the vertical front corner rabbets ($1/4" \times 1/8"$) running up the inside front edges of `B1` and `B2`.
   - Seat Front Facade `C1` into the corner rabbets. The 1/8" shoulders automatically pull the entire front carcass 90° square, concealing raw front plywood edges!
   - Clamp square with corner clamping blocks. Verify diagonal corner-to-corner ($34.18"$).
2. **Slide In Interior Partitions (`D1-A` & `D1-B`)**:
   - Run a thin bead of PVA wood glue into the bottom 1/8" grooves on `A1` at $X = 11-3/4"$ and $X = 23-1/2"$.
   - Slide Living/Kitchen divider `D1-A` and Kitchen/Foyer divider `D1-B` into the grooves from the open rear of the house until they meet the front wall.
   - Glue front edge of dividers to inside of `C1`.
   - *Result*: Partitions stand rigidly upright and square automatically without any need for visible support cleats!

---

### Phase 6: Fireplace & Staircase Sub-Assemblies & Installation
1. **Foyer Fireplace Assembly**:
   - Build $5" \text{ Wide} \times 1-1/2" \text{ Deep} \times 4-1/2" \text{ High}$ brick fireplace on the bench.
   - Glue against kitchen divider `D1-B` ($Z = 1/2"$ to $5-1/2"$) facing into Foyer.
2. **Foyer Staircase Assembly**:
   - Build 2" wide stringer flight with 12 steps ($11/16"$ rise, $1/2"$ run).
   - Position against right gable `B2`: bottom step lands at $Z = 6"$ (mid-depth), top step arrives at $Z = 0"$ (front wall).
   - Verify $1-7/8"$ of clear solid wall forward of the Foyer window at $Z = 9"$. Glue staircase in place.

---

### Phase 7: Second Floor Deck, Partitions & Bathroom Outfitting
1. **Install Second Floor Deck (`A2`)**:
   - Apply wood glue along top edges of `B1`, `B2`, `C1`, and into the underside ceiling grooves of `A2`.
   - Slide `A2` into place from the rear. The underside grooves seat down over the top edges of `D1-A` and `D1-B`, and the stair opening aligns over the stairs.
   - Clamp firmly until cured.
2. **Slide In 2nd Floor Partitions (`D2-A` & `D2-B`)**:
   - Apply glue into top floor grooves of `A2` at $X = 6-1/4"$ and $X = 19"$.
   - Slide Bath/Women divider `D2-A` and Women/Mans divider `D2-B` into place.
   - Pre-hang authentic 1:12 interior doors ($6-5/16" \times 3-7/16"$) with brass hardware.
3. **Install Mans Room Stair Guardrail**:
   - Install turned wood balusters and handrails around stair well opening.
4. **Install Bathroom Suite (While Room is Completely Accessible!)**:
   - Clawfoot bathtub placed along the **front wall** ($Z = 0"$ to $2.2"$) under the front window ($X = 3-1/4"$).
   - Pedestal sink and wall mirror mounted on solid left gable wall ($Z = 4-1/2"$), directly in front of the doorway on `D2-A`.
   - Vintage toilet with overhead tank mounted on solid left gable wall ($Z = 8-1/2"$ to $11"$), tucked securely behind the door swing.

---

### Phase 8: Attic Floor Deck & Roof Structure
1. **Install Attic Floor Deck (`A3`)**:
   - Apply glue into underside ceiling grooves of `A3` at $X = 6-1/4"$ and $X = 19"$, and along gable wall eave lines ($Y = 16-1/2"$).
   - Drop solid $32" \times 12"$ deck `A3` into place, seating its grooves over `D2-A` and `D2-B`.
2. **Front Roof Slope (`E1`)**:
   - Glue continuous solid panel `E1` ($32" \times 12-1/16"$) across front rafters/gables flush with side gables and 1" front eave overhang.
3. **Rear Roof Slope (`E2`) with Hands-On Peek-In Cutout**:
   - Position panel `E2` ($32" \times 12-1/16"$) on the rear slope. The triangular cutout ($27" \text{ base} \times 8.40" \text{ altitude}$) preserves the authentic roofline wings (2-1/2" each side) and eaves while maintaining complete, unobstructed hands-on reach into the finished 3rd-floor cathedral attic.
   - Glue `E2` securely along the left and right gable rafter edges and ridge line.
   - Cap the ridge line with a 32" decorative ridge board along the peak of `E1` and `E2`.

---

### Phase 9: Windows, Exterior Doors & Trim
1. **Birch Front Door**: Install door into $2-3/4" \times 6-3/4"$ opening in Foyer; attach 2-tier direct entry steps.
2. **Standard Windows (7 sets)**: Seat $2-1/4" \times 5"$ window units into openings on Front (5) and 1st floor side gables (2).
3. **Exterior Trim**: Install $1/8" \times 3/8"$ vertical corner casings, watertable drip molding, and roof fascia.

---

### Phase 10: Exterior Landscaping & Quality Inspection
1. **Plinth Landscaping**: Apply lawn turf, flagstone path, garden beds, shrubs, and side garden bench on Level 0 Plinth.
2. **Final Inspection**: Verify door swings, staircase clearance, attic peek-in visibility, and touch up paint.

---

## 6. Master Baltic Birch Cutting Schedule (Dual Fraction & Decimal)

| Part ID | Part Name | Qty | Thickness | Ruler Width | Ruler Height / Length | Decimal W | Decimal H | Machining & Groove Specifications |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| **A0** | Landscaped Base Plinth | 1 | 1/4" | 48" | 32" | 48.00" | 32.00" | Grounds perimeter (lawn, walk, garden beds, bench) |
| **A1** | House Base Platform | 1 | 1/4" | 32" | 12" | 32.00" | 12.00" | **Route two 1/4" W × 1/8" D grooves** on top face at $X = 11-3/4"$ (D1-A) & $X = 23-1/2"$ (D1-B) |
| **A2** | Second Floor Deck | 1 | 1/4" | 32" | 12" | 32.00" | 12.00" | **Route 1/8" grooves**: Underside at $X = 11-3/4"$ & $23-1/2"$; Top face at $X = 6-1/4"$ & $19"$; cut stair well |
| **A3** | Attic Floor Deck | 1 | 1/4" | 32" | 12" | 32.00" | 12.00" | **Route two 1/4" W × 1/8" D grooves** on underside at $X = 6-1/4"$ (D2-A) & $X = 19"$ (D2-B) |
| **B1** | Left Exterior Gable Wall | 1 | 1/4" | 12" | **24-7/8"** | 12.00" | **24.90"** | 16-1/2" wall + 8.40" peak (54.5° pitch); 1 Living win 2-1/4"×5" at $Z=6"$ (Zero 2nd fl side win; 1/8" dados at decks) |
| **B2** | Right Exterior Gable Wall | 1 | 1/4" | 12" | **24-7/8"** | 12.00" | **24.90"** | 16-1/2" wall + 8.40" peak (54.5° pitch); 1 Foyer win 2-1/4"×5" at $Z=9"$ (leaves 1-7/8" clear of stairs; zero 2nd fl side win) |
| **C1** | Front Facade Wall | 1 | 1/4" | 32" | 16-1/2" | 32.00" | 16.50" | Cutouts for 5 identical 2-1/4"×5" windows and 2-3/4"×6-3/4" Birch front door |
| **D1-A**| Living/Kitchen Divider | 1 | 1/4" | 12" | **8-1/4"** | 12.00" | **8.25"** | **Height 8-1/4" to seat in 1/8" grooves**; cased walkthrough 3" × 6-1/2" (no door) |
| **D1-B**| Kitchen/Foyer Divider | 1 | 1/4" | 12" | **8-1/4"** | 12.00" | **8.25"** | **Height 8-1/4" to seat in 1/8" grooves**; cased walkthrough at rear (fireplace at front) |
| **D2-A**| Bath/Women Divider | 1 | 1/4" | 12" | **8-1/4"** | 12.00" | **8.25"** | **Height 8-1/4" to seat in 1/8" grooves**; cutout 3-7/16" × 6-5/16" at Z=3-1/2" for inside door |
| **D2-B**| Women/Mans Divider | 1 | 1/4" | 12" | **8-1/4"** | 12.00" | **8.25"** | **Height 8-1/4" to seat in 1/8" grooves**; cutout 3-7/16" × 6-5/16" for inside door |
| **E1** | Main Front Roof Slope | 1 | 1/4" | 32" | **12-1/16"** | 32.00" | **12.04"** | Continuous solid panel (54.5° pitch, 1" front eave, flush with gables) |
| **E2** | Rear Roof Slope (Cutout) | 1 | 1/4" | 32" | **12-1/16"** | 32.00" | **12.04"** | **27" base × 8.40" alt triangular cutout** (preserves roofline wings with hands-on attic reach) |
| **WIN-STD**| Standard 1:12 Window Units| 7 sets| Wood | 2-1/2" | 5-1/4" | 2.50" | 5.25" | Hole opening 2-1/4"×5" (2.25"×5.00") with 1/8" flange; 5 on front + 1 on left gable + 1 on right |
| **DOOR-FR**| Birch Front Door Unit | 1 | Wood | 2-3/4" | 6-3/4" | 2.75" | 6.75" | Inside hole cutout 2-3/4" W × 6-3/4" H (2.75" × 6.75") centered at X = 26-1/2" |
| **DOOR-UP**| Authentic 1:12 Inside Doors| 2 | Wood | 3-7/16" | 6-5/16" | 3.46" | 6.29" | Raised moldings, brass knobs for 2nd floor partitions |
| **HEARTH** | Foyer Brick Fireplace | 1 set | Brick | 5" | 4-1/2" | 5.00" | 4.50" | 5" W × 1-1/2" D on kitchen divider facing Foyer |
| **STAIR**  | Foyer-Mans Staircase | 1 set | Wood | 2" | 6" | 2.00" | 6.00" | 12 steps (11/16" rise, 1/2" run); lands in mid at Z=6" |
| **BATH-TUB**| Clawfoot Bathtub | 1 set | Porcelain | 2-3/16" | 4-13/16" | 2.20" | 4.80" | Placed against front wall under X = 3-1/4" window |
| **BATH-SNK**| Pedestal Sink & Mirror | 1 set | Porcelain | 1-13/16" | 2" | 1.80" | 2.00" | Mounted on left gable directly in front of door |
| **BATH-WC** | Vintage Toilet with Tank | 1 set | Porcelain | 1-3/8" | 2-3/16" | 1.40" | 2.20" | Mounted on left gable tucked behind door swing |
| **RAIL-MAN**| Mans Stair Guardrail | 1 set | Wood | 2-1/4"×6" | 2-13/16" | 2.25" | 2.80" | Handrails, turned balusters, newels around opening |
| **TRIM-QR** | Assembly Alignment Cleats | 16 lin ft | 1/4" sq | 1/4" | 192" | 0.25" | 192.00" | Carcass perimeter corner joints (dados hold partitions) |
| **TRIM-COR**| Corner & Casing Trim | 14 lin ft | 1/8"×3/8" | 3/8" | 168" | 0.375" | 168.00" | Exterior vertical corner boards, base trim, drip caps |