Hi flim, can you please send me a .dxf file that doesn't work? You can post it here or e-mail it to me at moi@moi3d.com . Then I'll be able to take a look at it and see what's going on. MoI currently supports LINE, CIRCLE, ARC, POINT, POLYLINE, ELLIPSE, and SPLINE entities in dxf files.

3D solids are encrypted in DXF files and so are not read, you would instead need to use one of .3dm, STEP, IGES, or SAT file formats for transferring surfaces and solids.

- Michael

After export as 2007 ASCII DXF, I can see the sketches in each layer. As you mentioned already solid cannot be display, I have to export all solid in BricsCAD as SAT and import in MoI, then reassign each to MoI Styles (layer).

But I encounter another problem in Boolean Diff, the surface of the resulting block lost some face if I choose to keep the subtract object. I will email the 3dm file to you.

the free 123D Design 2.2.14 opens directly DWG and accessorily resolve complex fillets for moi! ;)

(import/export: DWG, Sat/Step) so cool for moi!