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Sydney Glass at Padstow should be able to cut 25mm plate glass blanks for you. Naxos Abrasives are a good source of abrasives and they sell cerium oxide too. You make a grinding tool from plaster and epoxy ceramic tiles to it for the grinding tool. I would recommend something like an 8" F7- F7.5 as a first scope. Its much easier to hold an 8" than a 6" .
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