Using an AI Parametric Part Generator
A parametric part is one defined by dimensions you can change — make a hole 6 mm instead of 5 mm and everything updates. An AI parametric part generator lets you create and adjust that geometry with plain English instead of a constraint solver. Here is how to use one well.
How it works
With PartWork.ai, you describe a part and the AI generates real 3D geometry — not a picture, actual solid geometry you can measure, edit, and export. Because it is parametric, you keep steering it:
Create a gear housing 80 mm wide with a 30 mm bore
Make the wall 5 mm thick
Add four M4 mounting holes on the front faceEach instruction modifies the same part. Your full history is saved, so you can step back to any version. See Modifying Parts for the editing workflow.
Where it shines
Custom one-offs
Brackets, enclosures, adapters, jigs — parts too specific to find off the shelf.
Fast iteration
Change a dimension by describing it. No re-drafting, no broken constraints.
No CAD background
You describe intent; the AI handles sketches, extrudes, and fillets.
Straight to manufacturing
Export STEP for CNC or STL for 3D printing when the part is right.
How to get accurate results
Always give units
"30 mm" or "1.5 inches" — never leave dimensions ambiguous.
Build incrementally
Add one feature, check it, then add the next. Easier to catch mistakes.
Select, then describe
Click a face and say "add a hole here" for precise placement.
Mix tools and language
Use tools for exact placement, language for complex changes.
More prompt tips are in Creating Parts.
Generate your first part
Start with 2 free AI generations — no card required
PartWork.ai runs in your browser — describe a part, get editable parametric geometry, export for manufacturing. Open the studio. Need more after your free generations? 100 credits for $4.99 (about 5¢ each).