I looked at the bare CBG neck, made a pad, and created tool moves from it.

This is the first attempt. The thing is 40mm wide, which is wider than a 3 string neck by a few mm. cutting air makes for good edges. I hope. :D
I had the neck too tall!

I had based the Z axis of the neck off 1.5"/38.1mm.
It's only 26mm. big difference. I was cutting air.

I changed the model, and changed the headstock to be 16mm tall.

Oops. Now I have to update everything.