More questions

Hello…I hope everyone is doing well.
I have two questions:
1. I want to extrude an object THROUGH a target object, and when I delete the extrusion, I want it to leave a hole in the shape of the outline of the extrusion in the target object. I tried this, but when I deleted the extrusion, the target object did not have the desired hole in it.

2. How do I rotate an object exactly 64 degrees, around a central axis? I have never seen any place where we could do this under ‘Rotate 2-D’ or ‘Rotate 3-D’. It appears to be always free hand rotation. I need to be able to input exact numbers.

Thank you in advance for your assistance.


  1. You need to use a boolean difference to subtract the second extrusion from the first.
  2. You can fill in the desired degree in the command line while executing the rotate 2D/3D commands.

Both operations are thoroughly explained in Rhino help files.

Cheers, Norbert

Thank you…I will try this…I’m learning!

Carl S.