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STL File Issues

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I recently received a zip folder containing several file types for a hydraulic hangar door system. I looked up the best ways to convert the step file, sat file and x_t file. Most everything I came across suggesting converting it to an STL file and then importing it into archicad, however importing a step file via FreeCAD and exporting it as a STL file changes the file size from 2MB to 82.7MB. Apparently it causes a lot of issues with archicad and I haven't been able to reduce the file size successfully yet. Is there a way to just import a step file as an object or reduce the STL file without drastically distorting the mesh? I've tried Meshmixer but I can't find a tutorial on how to reduce without breaking the object. Any help would be appreciated!

I suggest if FreeCAD can export as 3ds to try that

AC 3 to 26 -Windows 7 - 24GB - 8core 4.4Ghz

Laszlo Nagy
Community Admin
Community Admin
You could also try using IFC for the conversion.
When you save it make sure that BREP is used for geometric representation, in that case the exact geometry will be exported to the IFC file.
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