Originally Posted by
Voidmonster
[....] then shape and thin with the belt sander... Which is its own bit of work! I drill a hole through the piece of material, put a pin into a small bar of aluminum, stick double-sided tape over the pin, then affix the wedge material to the tape so the pin goes through the hole. Without the pin the heat can loosen the tape enough to pull the work piece off, but it keeps enough hold to prevent it from rotating around the pin. Without the tape, the pin can't keep it from rotating when you change the angle of grinding, so you need both tape and pin.