"Steve W." wrote in message
...
Tim Wescott wrote:
As for how to put that on the drawing. I would try.

Hole 1/2" bore located X / Y position.
Inner edge of hole to have a 40 degree relief chamfer from 90 - 270
degrees. (the degrees will be based on what you have to have. If
you only need the top 1/4 of the hole milled just call out the
degrees needed)
Steve W.

Would it hurt to chamfer the inside all the way around?
http://www.cogsdill.com/pdf/USCatalo...utBrochure.pdf

Or have the assembler file it as little as they have to?