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My bad, of course I meant Cr2O3.

However, liquid CO2 might be effective if you wanted to try your hand at ice-hardening :rolleyes:

I would go for the two-sided bench hone - not much more, but gives you the ability to use two pastes.

I only have a Miller pasted paddle with 3, 1, 0.5 and 0.25 micron diamond paste, with the 0.25...