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Since this is both my first natural and what I think is higher than my 8k Norton, I need more time to experiment with it. The first attempt at a test was to follow the 8k with this stone using...

I lapped it up to 600 grit sandpaper. The 220 and 320 grits lasted for awhile and did well to flatten the stone, but the 400 and 600 grit seemed to fall apart after a short time on the stone.

I...

On a second attempt in the oven I finally got it out and scrubbed as much plaster/oil off of the sides and bottom as I could get. Since this is so thin (1/4" at the thinnest point) should I just...

Thanks a million adrspach, I really appreciate all the help! I'll post more pictures of the sides/bottom when it's free. :beer1:

Last question, will my DMT be a good choice for lapping this stone?...

so as far as slowly cooling, just letting it air cool after taking it out of the oven it should be slow enough right? I'd had to mess up this stone just trying to get it out of the box.

I tried a method similar to this, resting the sides of the box on the edge of a deep pan and covering as best I could with a bowl to steam it out... it hasn't budged. How long does the oven method...

So before actually looking at the edge it produces on a razor, is it safe to assume the grit is 10k, +/- 1k?

While I was waiting on the stone to arrive I was searching all the terms I could think of to find something similar. The first stone in this thread was the closest I could find based on the patterns,...

Gentlemen, would the rock hounds and hone aficionados please help me identify this hone. Unfortunately, I cannot remove it from the box it is housed in, any recommendations on how to free this guy so...