I have done some searching and can't seem to find the answer I'm looking for. Maybe the answer is building the LN jig for use with a honing jig. I'm looking to reprofile the bevel angle on a few chisels. Right now most of my chisels are 25 degrees. I'm not talking about adding a micro bevel. If I wanted to redo the primary at 20 degrees or any other number, what is the best way to set the tool rest besides trial and error? If I place a 25 degree bevel against the wheel, would I want to raise or lower the tool rest to get to the 20 degree number?
On a completely separate note, for those that have CBN wheels, what is your preferred grit? I can only buy 1 at this time and not sure if 80 or 180 would be better.