From freecad I exported a sketch to FreecadSketch.dxf and from OpenSCAD I can use it such as: linear_extrude() import("FreecadSketch.dxf"); In BOSL2 one needs to use linear_sweep(region) to produce an equivalent attachable. I do not see how to go from a freecad sketch to a region. Apologies if I am missing something obvious as I am just getting started with both OpenSCAD and the BOSL2 libary.

> On Oct 5, 2023, at 4:09 PM, speedebikes@gmail.com wrote: > From freecad I exported a sketch to FreecadSketch.dxf and from OpenSCAD I can use it such as: > > linear_extrude() import("FreecadSketch.dxf"); > > In BOSL2 one needs to use linear_sweep(region) to produce an equivalent attachable. I do not see how to go from a freecad sketch to a region. Apologies if I am missing something obvious as I am just getting started with both OpenSCAD and the BOSL2 libary. > Unfortunately, there is no current direct way to go from a sketch in DXF to a Region as used by BOSL2. A somewhat manual option may be to convert the DXF to an SVG, then copy the `<path d="...">` data into strings in a .scad file, then convert those strings to 2D paths using the Pathbuilder OpenSCAD library. At that point you can combine the paths into a Region by putting them in a list. In the somewhat murky distant future it may become possible to directly get the geometry imported from the DXF file, via geometry introspection, but don't hold your breath for it. - Revar

Thanks! Just the response I was hoping for, a possible work around without forking OpenSCAD and without the chagrin of it being completely obvious.

A quick test suggests this approach will work. I exported a sketch from freecad directly to an .svg and nearly successfully got a polygon using Pathbuilder/svgShape(). The only issue was coordinates of form such as -8.323e-12 in the .svg ignore the exponent interpreting as -8.323 but replacing them with approximations not using exponents gives the expected result.