Exact sizes
Every sketch and feature is a number in millimetres, so the printed part fits.
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CAD for 3D Printing, in Your Browser
Design printable parts to the millimetre in VIZON CAD, from enclosures and brackets to knobs and spacers, then export STL for your slicer or STEP for later.
What you can do
Screw holes done right
Hole features with counterbores and countersinks, at standard clearance sizes such as 3.4 mm for M3.
Hollow parts
The shell feature turns a solid into an enclosure with walls of the thickness you choose.
Strong corners
Fillets on inside corners spread stress; chamfers on bottom edges help bed adhesion.
Change it after printing
If a hole is too tight, change one number, rebuild and print again.
STL in millimetres
STL export uses millimetres with Z up, which is what slicers expect.
From idea to printed part
Want more detail? Read the guide: Designing Parts for 3D Printing: The Rules That Matter.
- Start a CAD part, or describe it to the AI with its sizes.
- Add holes, fillets and shells for the features you need.
- Check sizes against the parts it has to fit.
- Export STL and slice it.
- After a test print, adjust the numbers and export again.
Made in VIZON
Real models built with these tools. Each one is free to download.
Electronics enclosure100 x 60 x 40 mm box, 2 mm walls, open top, four M3 screw bossesCAD part · free STEP, STL
Phone standAngled desk stand, 70 mm wide, with a charging cable slotCAD part · free STEP, STL
Control knob30 mm knob with a 6 mm shaft bore and 12 grip flutesCAD part · free STEP, STL
M3 hex standoff10 mm across flats, 20 mm long, M3 tap-drill boreCAD part · free STEP, STLFrequently asked questions
What wall thickness should I use for 3D printing?
For FDM printers, at least two nozzle widths, so 0.8 to 1.2 mm with a 0.4 mm nozzle, and 2 mm or more for parts that take load.
How much clearance do printed holes need?
Printed holes usually come out slightly small. Add about 0.2 to 0.4 mm to the diameter, or use standard clearance sizes.
Can I print the models in the gallery?
Yes. Every CAD model in the VIZON model gallery has a free STL download.
Related VIZON tools
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