... CAD or understand what you are seeing. Just import the DXF file from Templot and then export it again as a 3DS file. Then repeat the process in MeshLab to STL for 3D printing: http://www.meshlab.net/ (File> Import Mesh.../ Export Mesh...) The STL files can be viewed in Paint 3D in Windows10. Martin. posted: 26 Jul 2018 22:32 from: Martin Wynne Progressing slowly. Now with chair-screws, with the heads at random angles: 2_261718_260000001.png 2_261718_260000000.png Hopefully the 3D printing process will smooth it all out and add some fillet radii around them. That's barely visible in 4mm scale, but would be in the larger scales. If such things are added in the file, the file size will go through the roof for a full turnout (and the rendering time in TurboCAD likewise). The dimensions can be customised -- GWR bolts and chair screws are less prominent. Still a lot to do. Chair jaws and keys next. And then the major task of ...