Give these guys a try. http://www.standardmagneto.com/
i didnt had sucess here hope someone else has a other adress
I got my replacement brushes fron Independant ignition supplies of Bideford Devon.
Regards
Martyn
I've had good service from this mob[code=HTML]MAINELY MAGNETOS 207 834 7309 [/code] 127 Cyr Road, Cross lake. Maine 04779. He has sent me brushes. Mike.
If you wanted to make them yourself, I would try the carbon EDM electrode material, its very fine grained, & can be turned easy.