I posted the 3D Cad system I used to generate a spur gear. The drawing
is set up for center full depth cut. The red cutter is moved forward
like a shaper tool and a solid subtract is preformed. This was done for
every one of the radial set of lines. They have to be located in the
top and bottom set of guide lines ot the things that look like rulers.
These are set to make the gear blank roll along the pitch line on a
I after wasting a few cyber blanks got this system to work for a bevel
gear. It was enough to convince me to make an attachment for the shaper
for bevel gears. I will clean up the drawing and post it soon.
Dripping Springs TX