Parametric Multi-Layer Keychain Generator

This fully parametric OpenSCAD project allows users to generate a highly customizable 3-layer keychain with advanced design options, including multiple fonts, tab shapes, QR integration, and flexible key-ring positioning.
All parameters are exposed through the OpenSCAD Customizer, making the model ideal for MakerWorld.

⭐ Features

✔ 3 Independent Print Layers (Exportable Separately)

• Bottom Layer (Base)
• Middle Layer (Shape Offset Layer)
• Top Layer (Text or Logo Layer)
  Each layer can be exported as its own STL for multi-color or multi-material printing.

✔ Multiple Base Shapes

Choose from:

• Normal — follows the text outline
• Square
• Oval
• Drop Shape
• Heart Shape
• Rectangle

✔ Adjustable Key-Ring Hole (X/Y Positioning)

The key-ring hole is fully customizable:

• Move horizontally (X-axis)
• Move vertically (Y-axis)
• Works with all base shapes
• Always merges cleanly with the base

✔ 50+ Fonts and Dual-Font Mode

• Upper and lower text can use different fonts
• Or both use the same font (single-font mode)

✔ Text Effects

• Shadow layer
• Glitch layer
• Engraved mode
• Embossed mode

✔ QR Code Support

Import your QR code as:

• SVG
• DXF

QR area automatically aligns with the badge and can be positioned freely.

✔ Rear-Side Engraving

Optional text engraved on the bottom layer (e.g., phone number).

✔ Color Preview in OpenSCAD

Layer colors can be selected by name:

• black
• white
• red
• blue
• yellow
• orange
• green
• pink
  (and more…)

✔ Global Scale Factor

Resize the entire model proportionally with a single parameter.

✔ MakerWorld-Friendly Customizer Menu

All options use dropdowns, sliders, or toggles for a smooth user experience.

🧰 Recommended Print Settings

• Layer Height: 0.16–0.20 mm
• Infill: 20–40%
• Brim: Recommended for oval/drop shapes
• Material: PLA, PETG, or TPU
• Multi-Color Printing:
  Export each layer separately using export_modu in the Customizer.

🔧 How to Generate STLs

1. Open the .scad file in OpenSCAD.
2. Open Customizer (F10).
3. Set:

Bottom layer

export_modu = "alt" 

→ Press F6, then File → Export → STL

Middle layer

export_modu = "orta" 

Top layer

export_modu = "ust" 

Full Assembly

export_modu = "tam" 

📥 How to Use QR Code

1. Generate QR as SVG or DXF
2. Place file in the same directory as .scad
3. Set:

qr_dosya = "your_qr.svg" qr_is_svg = true qr_aktif = true 

📝 Parameter Overview (For MakerWorld Page)