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STL to DXF/DWG conversion


New member
I'm looking for the most time effficient way to convert STL files created from scan data into 2D and 3D DXF and DWG files. I've had these re-drawn in solidworks etc but this always involves a loss of dimensional accuracy which renders them unusable, any suggestions please?? I can convert the STLs into most other 3D files (IGS, OBJ etc) if this makes further conversion easier

many thanks