Quote Originally Posted by Jonathan View Post
Why do you need such a small cutter...it must be a REALLY fine mould?
Not really, I'm trying to recreate a couple of moulds I already have that are showing signs of wear. I don't want to spark erode 90 degree corners and a 0.5mm radius looks like a credible approximation on the drawings. I can hand grind 0.5 to square if it looks naff but I'd rather not.