That is awesome! Have it machined or is it a modified part? As far as making your own tools, I recently got a wild hair and wanted to do the same. I saw this guy on youtube doing it this way and have started setting up as he did. I did send him over here to the forums so hopefully he might chime in if he sees this. Anyhow, it's crude but works great it seems, atleast for the knivesI sure will Nemesis.
I've tried quite a lot tricks and new bits of kit in the past, always seems the older methods work best. Don't think much to those embedded abrasive silicon points that some guys use. The older Felt points and Bobs seem better. By the way that's my custom stainless pressure tester:-
Basically dunk the watch in the chamber and can pressure test down to like 3 Kilometres.
Sure wanna buy myself a kiln one day and start forging tools.
Regs
Bry

http://www.youtube.com/watch?v=_6yiBqgzrJM