RayV wrote:
The DD and the angle guide don't seem to be doing anything fancy so I
think why can't I just do it myself.

Reading the DD manual helped out with understanding what it is doing.
The bit needs to be aligned in the 'chuck' The chuck has a cammed ring
that pivots the bit as you rotate it to create the relief angle.
Pretty neat idea.
http://www.genext.drilldoctor.com/PD...rs%20Guide.pdf
I can only assume the grinding jig does something similar.

I'm gonna try Bill's method and see if I can get the hang of it before
I consider a DD.