You have the file. We have the printers.

What makes a good STL

• Units in millimetres. The calculator warns when a model looks suspiciously small. Fusion 360, FreeCAD, Blender and Tinkercad export in mm when the document is set that way.
• Closed surfaces. An STL must be watertight. Small holes in the mesh we repair for free.
• Walls from 0.8 mm. Below that the 0.4 mm nozzle cannot lay two lines. Lettering from 1.2 mm stroke width.
• Overhangs under 60°. Steeper ones need supports, which cost material and leave marks underneath.
• Resolution. 0.01 mm tolerance on export is enough. Files over 100 MB bring no visible improvement.

What we check

We open every file in the slicer and look at wall thickness, overhangs, units and the best print orientation. If a different orientation makes the part stronger or cheaper, we choose it. If we have to change something that affects function, we ask.

Models from the internet

Prints from Printables, Thingiverse, MakerWorld or Cults3D are almost always allowed for personal use. Check the model's licence: "non-commercial" means you may not resell the part. We only print what you are allowed to use, and no weapons or weapon parts.

Other formats

The calculator reads OBJ as well. STEP, 3MF, IGES, F3D or SLDPRT you send with a request; we export ourselves and reply with a price within 24 hours.