I have been attempting to make an obsidian can and have ground to 3000 grit on my wheels. I have tried to polish using tin oxide and cerium oxide and have not been able to get the shine that I want. Does anyone have some advice on polishing Obsidian cabs?
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Edited: Nov 22, 2021
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No. I will look into finer polishing material.
There's higher and finer grit that may be a better choice before the polishing compound. Have you received any answers other than mine?