Originally Posted by
elanjacobs
None of the above.
The brad points you can buy have a much more pronounced angle than how we made them. The pic of the grinding wheel is taken top down; about a 10-15 degree angle straight across the wheel.
The bits are held pretty much straight on, with the back of the bit just slightly angled out so the centre point comes to a point and is not left square at the tip, and with the 3 points of the bit (the 2 outer spurs and the centre point) all in a line parallel to the tool rest so there is no funny business trying to make a V with a square wheel. The shape of the wheel does all the work.
I might wander down to my old work and take some more pics of the process for a proper tutorial thread.