mini mill

[Rickabilly]

Hello DA,
Car leaf spring, Hmmm, maybe but there are probably better things to use, leaf springs are all about resilience, not holding an edge, any good tool steel will work but I know that the professional ones are actually made out of file blanks so can't imagine a better material to use than an old file except maybe the carbide that you are already using, sharpened using a silicon carbide wheel to the same geometry that I have provided and you are likely to have a good usable relatively cheap tool that isn't as prone to wear as a carbon steel unit.

I made one out of a piece of HSS parting blade and it worked very well, and I used to make "three square" scrapers out of three fluted HSS taps, I suppose I'll be drawing up a three square scraper diagram now as well , three square scrapers are the triangular file equivalent of the flat scraper, with three cutting edges running along the length of the tip of the tool in a triangular shape, used for deburring and scraping inside holes and other concave shapes.

Best regards
Rick