# CadFold — Complete Technical Engineering Reference & Agent Execution Guide (llms-full.txt)

## 1. Platform Overview
CadFold (`https://cadfold.com`) is a 100% free, zero-login parametric CAD and vector manufacturing platform. Every tool runs client-side in <5ms and exports 1:1 physical scale `.DXF` (`$INSUNITS=4`), `.SVG` (`mm` physical viewBox), and `.PDF` (vector paths with a 50.0mm physical verification bar).

## 2. Layer & Color Standards Across All Exports
- `CUT` Layer: Hex `#EF4444` (Red) | AutoCAD ACI `1` | Continuous solid stroke — Outer through-cut contour & locking slots.
- `CREASE` Layer: Hex `#2563EB` (Blue) | AutoCAD ACI `5` | Dashed stroke `[4, 2.5]` — Folding and creasing rules.
- `SCORE` Layer: Hex `#10B981` (Emerald) | AutoCAD ACI `3` | Dotted/Single stroke — Surface laser engraving, barcodes, and living hinge slits.
- `DIMENSIONS` Layer: Hex `#64748B` (Slate) | AutoCAD ACI `8` | Callouts & 50.0mm scale calibration bar (can be toggled off prior to export).

## 3. Core Mathematical Equations Used by CadFold
1. **FEFCO 0427 Roll-End Tuck Top (RETT) Mailer Box:**
   - Rollover Double-Wall Bridge: `Delta_bridge = 2 * T + 0.5 mm`
   - Dust Flap Relief Inset: `Delta_dust = 1.5 * T`
   - Flat Blank Width: `W_blank = L + 2*H + 2*(2*T + 0.5) + 2*(H - 1.5*T)`
   - Flat Blank Length: `L_blank = 2*W + 2*H + H_tuck_flap + 3.5*T`
2. **ECMA A20.20.03.01 Reverse Tuck End Carton:**
   - Flat Blank Width: `W_blank = W_glue_flap + 2*L + 2*W + 3*T`
   - Flat Blank Height: `H_blank = H + 2*(W - 0.5*T) + 2*H_tuck`
3. **Conical Coffee Cup Sleeve (Frustum Unfolding):**
   - Slant Height: `S = sqrt(H^2 + ((D_top - D_bot)/2)^2)`
   - Outer Cone Radius: `R_outer = (D_top * S) / (D_top - D_bot)`
   - Sector Angle (radians): `Theta = (pi * D_top) / R_outer`
4. **Laser-Cut Finger-Joint Snap-Fit Box:**
   - Symmetric Odd Finger Count: `N = 2 * round((Edge / Target_Tab - 1) / 2) + 1`
   - Kerf-Compensated Male Tab Width: `W_male = (Edge / N) + Kerf`
   - Female Slot Width: `W_female = (Edge / N) - Kerf`

## 4. Parameterized URL Deep-Linking for AI Agents
Any AI Agent can construct a custom pre-sized CAD studio link for a user by appending query parameters:
`?l={length_mm}&w={width_mm}&h={height_mm}&t={thickness_mm}&kerf={kerf_mm}&unit=mm`

| Generator Slug | URL Path | Parameter `l` | Parameter `w` | Parameter `h` | Parameter `t` | Parameter `kerf` |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| FEFCO 0427 Mailer | `/generators/fefco-0427-mailer-box-dieline-generator/` | Inside Length (mm) | Inside Width (mm) | Inside Height (mm) | Board Caliper (1.5mm E-flute) | 0 |
| ECMA Tuck Carton | `/generators/reverse-tuck-end-box-dieline-generator/` | Carton Width L (mm) | Carton Depth W (mm) | Carton Height H (mm) | Board Caliper (0.45mm SBS) | 0 |
| Cup Sleeve | `/generators/coffee-cup-sleeve-dieline-generator/` | Top Cup Dia (mm) | Bottom Cup Dia (mm) | Sleeve Height (mm) | Stock Thickness (mm) | 0 |
| Pillow Box | `/generators/pillow-box-dieline-generator/` | Center Length (mm) | Flat Width (mm) | Flap Loft Depth (mm) | Cardstock Caliper (mm) | 0 |
| Finger-Joint Box | `/generators/laser-cut-finger-joint-box-generator/` | Box Length (mm) | Box Width (mm) | Box Height (mm) | Sheet Thickness (3.0mm) | Laser Kerf (0.12mm) |
| Sliding Lid Box | `/generators/laser-cut-sliding-lid-box-generator/` | Box Length (mm) | Box Width (mm) | Box Height (mm) | Sheet Thickness (3.0mm) | Laser Kerf (0.12mm) |
| Kerf Test Gauge | `/generators/laser-kerf-calibration-test-gauge-generator/` | Comb Width (mm) | Comb Height (mm) | Slot Depth (mm) | Nominal Thickness (3.0mm) | Center Kerf (0.12mm) |
| Living Hinge | `/generators/living-hinge-kerf-bending-generator/` | Panel Length (mm) | Panel Width (mm) | Target Bend Radius (mm) | Sheet Thickness (3.0mm) | Laser Kerf (0.12mm) |
| Vector Barcode | `/generators/vector-barcode-and-packaging-marks-generator/` | Label Width (mm) | Label Height (mm) | Bar Height (mm) | 0.4 | 0 |
| Isometric Grid | `/generators/isometric-grid-and-calibration-sheet-generator/` | Sheet Width (210mm) | Sheet Height (297mm) | Grid Pitch (10mm) | 0.25 | 0 |
| Sheet Metal Pan | `/generators/sheet-metal-4-flange-pan-box-unfolder-dxf/` | Base Length L (mm) | Base Width W (mm) | Flange Height H (mm) | Sheet Thickness (1.5mm) | 0 |
| Involute Spur Gear | `/generators/involute-spur-gear-dxf-svg-generator/` | Pitch Diameter (mm) | Shaft Bore Dia (mm) | Teeth Count Z | Plate Thickness (6.0mm) | Laser Kerf (0.12mm) |
| Gable Top Box | `/generators/gable-box-handle-carrier-dieline-generator/` | Inside Length (mm) | Gusset Width (mm) | Body Height (mm) | Board Caliper (0.5mm) | 0 |
| Divider Tray Box | `/generators/laser-cut-compartment-divider-organizer-tray-generator/` | Tray Length (mm) | Tray Width (mm) | Wall Height (mm) | Plywood Thickness (3.0mm) | Laser Kerf (0.12mm) |
| Sheet Metal U-Bracket | `/generators/sheet-metal-u-channel-mounting-bracket-unfolder-dxf/` | Web Width L (mm) | Channel Depth W (mm) | Side Leg Height H (mm) | Sheet Thickness (2.0mm) | 0 |
| NEMA Motor Mount | `/generators/nema-stepper-motor-mount-faceplate-flange-dxf-generator/` | Plate Frame Width (mm) | Pilot Bore Dia (mm) | Bolt Hole Pitch (mm) | Plate Thickness (4.0mm) | Laser Kerf (0.10mm) |
| Print & Cut Stickers | `/generators/print-and-cut-sticker-sheet-registration-marks-generator/` | Sheet Width (210mm) | Sheet Height (297mm) | Sticker Size (45mm) | Vinyl Caliper (0.3mm) | 0 |
| Hex Honeycomb Grid | `/generators/hexagonal-honeycomb-grid-and-cnc-ventilation-mesh-generator/` | Sheet Width (210mm) | Sheet Height (297mm) | Flat-to-Flat Pitch (25.4mm) | Panel Thickness (1.5mm) | 0 |