Scale/size issue with printing model


I just tried to make a 3d print of a simple model (basically a simple ring) .

I think the ring was about 50mm in Shapr3d, but when I exported it to STL (into Simplify3d), it became HUGE! like … twice as big as i expected.

Am I missing something? Do I need to do something to keep the scale accurate?

Thank you for any help!!


I use Simplify3D to import STL’s from Shapr3D. When you did the export from Shapr3D, were the Units set to Millimeters?


Thanks Mike - It’s a great workaround to export the model in Milimeters and also have the same unit set in 3d printing Slicer application. You can then easily resize the model in the slicer app before printing.


Thank youfor your reply!

As far as I can tell, both programs are set to mm . I use MM in Shapr3d … is there a setting to make it export in mm ?

Does anyone know if there is a setting in Simplfy 3d, to import it as mm ??

Again, thank you for any help!!


Hi - according to this thread, you can set in your preferences:

When you export in STL, just make sure you use the same units across your workflow, as STL doesn’t contain units