I'm sorry but I have no pictures at this time. I always did mine by hand with a carbide burr but that's just me. I would try it first on a piece of scrap metal to get some practice. Remember its not a big crazy chamfer. For example on a small block head ( 1/2 inch bolt ) its only gonna be like 3/16 - 1/4 inch max 45 degree chamfer. Just enough to spread the pressure from directly under the bolt head.