How to Delete AutoCAD block objects in 3DS Max
Step1: Copy and paste this code in notepad
o.controller=prs() if classof o.parent == LinkComposite do o.parent = undefined )
for o in objects where classof o == LinkComposite do delete o
Save as CAD CLEANER.mcr
Run 3dsMax, run this script
Source: davetyner.com – Big thanks to the author!
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