abufletcher

Now, there's a whole 'nother topic! Personally, I've found I can get fairly sharp bends with up to 3.5mm music wires without using any heat. I put one end in a vice and with a single sharp pull make the bend a bit further than required...and then bend it back to the desired angle. With 4mm and up, it seems to need to be heated. But then you get into the whole question of how much heat, and how to retemper the metal.