From idea to printable STL
The full workflow from concept to physical part.
1. Sketch it out
Before writing code, sketch the part on paper or in your head. Identify:
- What dimensions need to be adjustable (these become parameters)
- What is fixed (these become constants or derived values)
- What boolean operations you need (union, difference, intersection)
2. Start with the base shape
Build the model from the outside in. Start with the main body, then subtract holes and add details. Use difference for cutouts and union for additions.
3. Add parameters
Replace hard-coded numbers with param declarations. Set ranges that prevent impossible geometry (e.g., wall thickness can not exceed half the box width).
4. Test parameter extremes
Drag every slider to its minimum and maximum. Check that:
- The model does not self-intersect or produce zero-volume geometry
- Wall thickness remains printable at all settings
- The model looks intentional at every point in the range
5. Export STL
Click Download STL in the viewer toolbar. The file is in millimeters, which is what most slicers expect.
6. Slice and print
Import the STL into your slicer. Recommended settings for typical parametric parts:
- Layer height: 0.2mm for functional parts, 0.12mm for fine detail
- Infill: 15–20% for enclosures, 30–50% for structural parts
- Perimeters: 3 minimum for strength
- Material: PLA for prototypes, PETG for heat resistance, TPU for flexibility
7. Share
Click Save to get a short URL. Send it to anyone - they can adjust parameters and export their own STL without needing an account.