STLGen

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Tolerance test maker

Find the clearance your printer needs for parts that fit.

Drag to turn, scroll or pinch to zoom. Grid squares are 10 mm.
Building the model…
Saves an STL file in millimetres, ready for your slicer.

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About the tolerance test maker

A peg and a row of holes that grow in small steps. Print it once to learn exactly how much gap your printer and filament need.

  • Print it with the settings you normally use.
  • Repeat it when you change filament type.
  • Use the result as the fit gap in the box, lid and knob makers.

Everything runs in your browser: nothing is uploaded and there is no sign-up.

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