In Inkscape I used Trace Bitmap on a JPG, exported it to OpenSCAD, and it previews OK. I then tried exporting from Inkscape as a DXF, which I understand some users recommend. But when I imported that into OpenSCAD I get: "WARNING: No top level geometry to render." linear_extrude(21) import("C:/Users/terry/Dropbox/3D Printer/PROJECTS/PlugCover/StartAgain/Outline2Black.dxf"); In case it helps, here's the failed DXF https://www.dropbox.com/s/cuvsu273kg48u8t/Outline2Black.dxf?raw=1 And here's the OK SVG: https://www.dropbox.com/s/vqyvwqon773joo2/Outline2Black.svg?raw=1 Academic, as the SVG route works fine, but I'm curious to know why DXF fails? Terry