Import DXF ignores some geometry

[KnoxBoxDesigns (Knox)]

I noticed when I imported this dxf to mill some holes the square shapes are not coming in as well. How do I troubleshoot why it’s ignoring some shapes and not others? is there something I should change in the dxf?

FLATPATTERN_3.dxf (355.6 KB)

[WillAdams (William Adams (Carbide 3D))]

I was able to open your file in LibreCAD:

export as a Plain (CAM) SVG:

which then opened as expected:

[jtclose (Jim Close)]

Try to save the DXF in AutoCAD 10 → 12 format .

[WillAdams (William Adams (Carbide 3D))]

The following have been put forth as guidelines when exporting DXF:

• it may help to use the OVERKILL command to eliminate any overlapping or intersecting paths before exporting from AUTOCAD
• if lines have different elevations, use FLATTEN [Note 1] For DraftSight: CHANGE > all > Properties > elevation > 0. This sets the elevation of all elements to zero (makes Z equal to zero).
• PLINES are intrinsically joined, and should be used where appropriate [Note 2]
• AutoCAD 2000 DXF format (model geometry only, base model scaling) export from the desired face (not isometric view)
• 2004 Lines
• R13 format

Note 1: [https://www.reddit.com/r/cad/comments/77x98n/whats_the_best_way_in_autocad_to_make_line/dopkmlj/]
Note 2: [https://www.reddit.com/r/cad/comments/77x98n/whats_the_best_way_in_autocad_to_make_line/doph35g/]