TIPS FOR USING THE GRINDING DISC
First, clean the surface of the potter's wheel thoroughly. Small pieces of any debris on the wheel head or the disc can cause an up and down wobble, and that will be transferred to to what you are grinding.
Attach firmly the included special bat pins to the wheel head. Regular bad pins will not work because they will stick up above the surface of the diamond disc. The two holes on the disc will not interfere with the grinding operation. If you are grinding a sharp ragged edge at an angle, avoid the holes, and use the interior part of the disc until the sharp edge is smoothed off. This takes just a few seconds.
Place the diamond grinding disc onto the attached pins, just like you would a throwing bat. It has a coarse/medium side (120 grit) and a fine side (400 grit).
Use water with the disc. This can be as simple as a hand held squeeze bottle, or I also offer a water drip kit on this site.
The diamond particles are much harder than any ceramic, and since you are using all portions of the wheel due to its precision. It should never completely wear out. They do, however, over time become “dull” because tiny pieces chip off and leave a less sharp cutting edge. This can be remedied some by reversing the direction of the potters wheel for an hour or two of use from time to time, thereby using a different edge on the diamond particles.
The photograph at the bottom of this page shows a large chip in the bottom of a vase before and after it was ground away.
TIPS FOR USING THE DIAMOND SATURATED POLISHING PADS