🌀 Parametric Spiral Strap Generator for TPU Belts

This OpenSCAD script generates a customizable spiral-shaped strap, ideal for creating flexible TPU belts, coiled tension bands, or modular fastening systems. The spiral is built from a continuous ribbon path, ensuring smooth unrolling and consistent thickness throughout. Designed for precision and adaptability, it’s perfect for prototyping wearable components, cable wraps, or deployable structures.

🔧 Adjustable Parameters

• spiral_width: Defines the strap’s thickness in millimeters. This controls both the printed width and the spacing between loops.
• spiral_radius: Sets the maximum outer radius of the spiral. The entire design fits within a square area of 170×170 mm when set to 85 mm.
• turns: Number of spiral loops. More turns increase the total strap length while keeping the footprint compact.
• segments_per_turn: Controls the smoothness of the spiral curve. Higher values yield cleaner geometry for slicing and printing.
• layer_height: Sets the extrusion height of the strap. Adjust for single-layer prints or multi-layer reinforcement.

🧵 Use Cases

• TPU belts: Print and unroll for flexible tension straps or wearable loops.
• Cable organizers: Use as a peelable spiral wrap for bundling wires.
• Deployable structures: Integrate into modular systems that expand from a compact coil.
• Custom fasteners: Combine with hooks, tabs, or magnets for reusable closures.

🛠️ Print Tips

• Optimized for 0.6 mm nozzle with two perimeter walls.
• Use flexible filament like TPU for bendable, durable results.
• Print flat with minimal infill; the spiral unrolls into a long, uniform strip