lol, yeah but like... with an angle grinder? belt grinder? round file? I'm working on a falchion right now and I just want a small blood groove and I was thinking of a way to help me make it as straight as possible using an angle grinder.
I used a simple angle grinder. If you have a steady hand, than all you need is a new disc (to have perfect balance and eliminate shaking), and let it spin!