Overview
STEP (ISO 10303) solid model exchange—precise CAD geometry for CNC routing and machining instead of tessellated meshes.
Quick facts
- Difficulty
- Advanced
- Best for
- 3D · CAD solid
- Typical output
- STEP
- Typical cost
- Free
Excellent for
- CNC routing★★★★★
- Machined parts with holes and fits★★★★★
- Parametric solid handoff★★★★★
Compatible with
Pros & cons
Pros
- ✔CNC routing
- ✔Machined parts with holes and fits
- ✔Parametric solid handoff
Cons
- ✘Direct FDM slicing without mesh conversion
- ✘Embroidery or vinyl
Creator & maker guides
Preparing artwork
- Work in formats suited for export: STEP
Resolution & export
- Export AP214 or AP242 per shop preference.
- Use STL only when the maker explicitly slices for 3D print.
Bleed & safe areas
No items yet.
Common mistakes
- Tessellated STL sent when machinist needs STEP
- Missing tolerance callouts on mating features
- Wrong unit scale on import
Best practices
- 1Export AP214 or AP242 per shop preference.
- 2Document critical dimensions and fits in notes.
- 3Use STL only when the maker explicitly slices for 3D print.
Common mistakes
Tessellated STL sent when machinist needs STEP
Tessellated STL sent when machinist needs STEP
Missing tolerance callouts on mating features
Missing tolerance callouts on mating features
Wrong unit scale on import
Wrong unit scale on import
Troubleshooting
| Symptom | Cause | Solution |
|---|---|---|
| Tessellated STL sent when machinist needs STEP | See guides below for context | Review creator/maker tabs and troubleshooting table |
| Missing tolerance callouts on mating features | See guides below for context | Review creator/maker tabs and troubleshooting table |
| Wrong unit scale on import | See guides below for context | Review creator/maker tabs and troubleshooting table |
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