All Replies on Sharpening Stone Identification

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View steveinaz's profile

Sharpening Stone Identification

by steveinaz
posted 08-20-2017 05:43 PM

4 replies so far

View Aj2's profile


3322 posts in 2645 days

#1 posted 08-20-2017 08:52 PM

I don’t know what they are but I do know that some of those types of oil stones will turn a 220 Dmt into a worthless piece of plastic.
If you really need them flat find a flat cinder block to get you most of the way.
Gook luck and nice find.

-- Aj

View steveinaz's profile


49 posts in 2021 days

#2 posted 08-24-2017 07:28 PM

I spent a dollar on a cinder block and tried to flatten the stones. This seems very much like a losing battle. I wonder how many years it took the previous owner to dish the stone. Thanks for your reply.


-- Steve in AZ

View gargey's profile


1013 posts in 1622 days

#3 posted 08-24-2017 07:40 PM

I’d think a DMT Dia-Flat would work. But those are $150+

View Loren's profile


10574 posts in 4494 days

#4 posted 08-24-2017 07:41 PM

Those stones are probably silicon carbide. That’s
the same stuff gray grinding wheels are made of.
It’s very tough and hard-wearing. They can
allegedly be flattened with silicon carbide powder
lubricated on a piece of plate glass. I doubt
however it is worth the investment. The stones
are typically not very expensive.

You can get coarse Japan water stones made
of silicon carbide in a soft clay binder. I’ve
never used one but I presume they cut pretty

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