Buy a second hand manual tool and cutter grinder with an indexing head. Slap a cup wheel on it and have fun. (Note, this'll enable you to do facet points, but not rolled. If you wanna do a rolled point on a T&C, you'll need a tricky workhead.)
Suggested point angles;
ALU - 118deg included
Cu - 100deg included (45-110 brinell)
When you're drilling the alu, you'll need to ramp up the cutting speed or even increase the clearance angles when sharpening if it has a particuarly high silicon content, to counter the chewing gum effect of the silicone on your cutting edges. |