Spacers and standoffs, exactly your size
The part nobody sells in the size you need. Type the outer diameter, hole size and height — print it ten minutes later.
- Exact metric clearances baked in
- Any height, any diameter, in millimetres
- Batch different sizes by refining the same chat
Example prompt: “Cylindrical spacer, 20mm outer diameter, M5 through hole, 8mm tall”
How it works
Type what you need in plain words — sizes in millimetres if you have them. STLsmith's AI converts it into parametric geometry with FDM rules baked in (2mm minimum walls, real M3–M5 screw clearances, no-support orientation where possible). Preview it in 3D, refine by chatting (“5mm wider”, “M5 instead of M4”), and download the STL for Cura, PrusaSlicer, Bambu Studio or any other slicer.
What you can set
Every dimension is yours to choose: overall size, thickness, hole diameters and positions, counts and spacing. The first three forges are free with no account, and every generated STL downloads in full.
Frequently asked
Is the spacers & standoffs STL free to download?
Yes. You get 3 free forges without an account and 5 more with a free account — every generated STL downloads in full, no watermarks.
Can I set exact dimensions?
Yes. Describe sizes in millimetres in the prompt, then refine in chat until the preview matches what you need.