@cotty said:

[attachment=2:3ofj9ffx]<!-- ia2 -->SCF_Cotty_subd29.png<!-- ia2 -->[/attachment:3ofj9ffx]

I'm working on a tool to convert quad SUbD files into solids using another app. I've been having bit of fun testing the files posted to this thread. SCF_Cotty_subd29 was an intriguing one with its complexity. Attached is a STEP file of the resulting NURB shelled and split.

http://www.masterviacad.com/misc/cotty29Shell.zip

Tim

Are there any example SketchUp files using SUbD available?

I develop some software that converts SketchUp files to precise solids and want to test going from SUbD quads to NURBs.

Thanks!