At a car boot sale, I found a really heavy duty triangular tool insert holder. When I got home, I found that it would not fit in the tool post of my huge Herbert 4C Capstan Lathe. No Problem, - sez I, because I also have an old Denbigh Milling Machine, so I put in a suitable tool and tried to reduce the thickness, by slicing a bit off the top. I got a lot of smoke and sparks but very little cutting. I wonder how I can resharpen one of my slitting saws?!
The tool holder is pretty obviously hardened. So I rigged up a clamp affair on a heavy duty emery wheel and started to take small grindings off the top of it as the tip of tool has to be about 1/4 of an inch higher to line it up with the centre of the chuck. I have made a spacer to set it correctly, but about 4 hours of grinding, measuring, cooling, grinding, measuring, sweating, swearing, etc. I have only done about half. It's a big toolholder.
There must be a better way.
Does anyone know it? Please.