Hi Art,
Talked with Chip for quite awhile... some of it was actually about LCam and Mach3.
Found the following to work:
Open DXF
Select outside chain
Offset with Tool Dia: 0.0625, Inside, Clockwise toolpath unchecked... I get an outside offset with 0.0625" distance.
Same thing with 0.0938" Tool Dia. gets the correct offset.
Same thing with 0.1250" Tool Dia. gets the correct offset, but with the squared corners in the upper right "notch", rather than following the arc fillets.
If I Open DXF and try to go straight to a 0.1250" Tool Dia. offset... nothing is generated. For some reason, 0.0625" has to be run first. 0.0938" was arbitrary, but not neccessary to get the 0.1250" offset after generating a 0.0625" offset.
LCam still generates the Debug error when closing.
Hope this provides some clues...
Thanks, Paul, Central OR