Flattening Shapton Stones

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Forum topic by newwoodbutcher posted 08-10-2016 11:51 PM 698 views 0 times favorited 2 replies Add to Favorites Watch
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797 posts in 3413 days

08-10-2016 11:51 PM

I have been using the Shapton Woodworker set of stones (1000, 4000, 8000 grit) for about four years. I love them. A while back I added a 500 grit stone to help flatten some new blades. It has been my practice; I guess I read or heard somewhere that you should flatten the stone after every use (Shapton?). So that’s what I’m doing. I use the Shapton Diamond-on-Glass Lapping Plate.
What I notice after the first few strokes with the lapping plate is that the metal residue on the stone face and the cleaned up surface wear unevenly at first, as you would expect until it cleans up the whole surface and thereby flattens the stones face from edge to edge. That uneven wear to me indicates a subtle but worn or lower spot on the stones surface. So I think, OK it did need flattening.

My question: am I over doing this flattening thing on these very expensive stones? I haven’t worn any out yet, but as you may know these stones aren’t very thick. lately I’m wondering if I’m throwing away money by prematurely wearing out the stones.
For those of you that use these great Shapton stones, what is your practice regarding flattening your stones? And what has your experience been?

-- Ken

2 replies so far

View Aj2's profile


2567 posts in 2361 days

#1 posted 08-11-2016 12:33 AM

Ken I flatten my Shapton stones a lot.Its also keep a fresh surface that seems to cut faster.
What you might be seeing is the stone changing its shape when it drys.Sometimes mine will have a hollow,for my style is a good thing since I’m side sharpener.
Or the stone will get a hump both happen when they dry.I store them on their side.I was taught to store them sideways by Harrelson Stanley.A very good freehand sharpener much better then me.And I’m pretty fricken good.
I should mention I’m talking about Shapton pro.Gluing them to a piece of glass helps.


-- Aj

View newwoodbutcher's profile


797 posts in 3413 days

#2 posted 08-11-2016 05:10 AM

Thanks AJ,
I’e never looked at or considered the flatness of a dry stone. I usually flatten each stone when I’m done sharpening (still wet) then put it away. I then start sharpening with what I have assumed up to this point is a level stone. I’ll look closer the next time. Question these irregularities on the dry stone, do you let them dry and then flatten them?

-- Ken

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