On 01/16/2015 09:35 PM, digital wrote: > I'm not an expert with the command line and I am using windows not linux. > How do I run that in windows cmd? > On Windows that might be possible using MSYS2, but I guess it's easier to just do the math manually. * Get the bounding box of the STL via some editor and calculate the center of the STL in X and Y direction (for the example let's use center X = 10 and center Y = 5) * Create a simple scad file with just 1 line using the center values: projection(cut = true) translate([-10, -5, -Z]) import("your_file.stl"); * Create a batch file to call OpenSCAD multiple times, once for each layer, Z just changes for where you want the cuts to happen: openscad.com -o layer1.dxf -DZ=0 slice.scad openscad.com -o layer2.dxf -DZ=2 slice.scad openscad.com -o layer3.dxf -DZ=4 slice.scad openscad.com -o layer4.dxf -DZ=6 slice.scad ... ciao, Torsten.