Thin CA (superglue) works, I've tried it successfully myself :) (without the waxed paper).
Cheers
Jörg
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It can be done without the waxed paper and clamping too, but doing so keeps the gap as small as possible.
With the weathering issue you never know how far it goes. You can start lapping it and if you are lucky you will at some point reach solid rock. The question is how much if any rock will be left after lapping.
Those weathered stones that crumbled easily would sure be fun to play with. Pulverize them finely and have premade dry slurry. Seperate the garnets and make a garnet paste using them. :thinking:
These are just the first thoughts that popped into my head but I could see some interesting/fun experiments.
It also could be used just as a slurry stone, or cut into multiple slurry stones.
I have a coticule that is dished at least a quarter inch. I've been using the high ends for making slurry for the past 7+ years. I figure it will be flat in another 50 years or so.