@tig said: I first saved_as a R12 DXF [25Mb!] - which retained geometry etc, imported it using mm as the units, *NOT retaining the CAD origin... and it came into the SKP pretty quickly. *Some of the DWG's geometry is pretty far from 0,0,0 Here's my v2013 SKP version, looks like everything is there ? I zipped it because it's 5Mb. TIG You're a star. Thank you again for your time and skill. Talk about a convoluted path to getting the thing to behave itself. I am pressing on now with the model at full speed. Have a great day. Patrick depth3d

Welcome! Hope you get whatever help you need here. There will be challenges enough with that job.