I can supply some cerium oxide and some polishing pads if you want to try them. I also have an 8 inch plate glass blank (1 inch thick). It might be a good tool to go with Dave's blank. It has two clam shell chips - one on each side. I believe this would grind out in rough grinding if you used this blank as a mirror and would not be a problem as a tool.
I also have some pitch from a friend's old kit. I don't know it's quality but you are welcome to it.
Let me know if you want any of the above.
Rod.
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