Mine have become that way, and I haven't ever pressed hard. One corner in particular is really bad for some reason, and like you, I almost exclusively use the flats.PharmD921 wrote:My original set of medium stones...the edges seem as if i took an axe and chopped them and scraped the crap out of them. I feel this is from a stupid amount of pressure used to try to sharpen the fillet knives...hence the purchase of the new medium stones.
On the new stones I was not using the edges at all. I was sharpening on the flats only. I even took them and scrubbed them with a pad and comet to remove any "grit" that may have been present. Did not help. FWIW the chips (5-7 of them) are scattered all along the edge, not just one part.
I use the corners a bunch, but that kitchen knife was still pretty sharp, just needed touched up. I initially only planned on doing 3 passes on the meduim stones and then moving on to the flats of the white stonesphaust wrote:Mine have become that way, and I haven't ever pressed hard. One corner in particular is really bad for some reason, and like you, I almost exclusively use the flats.
I think my original post is getting lost in the replies and discussion of how i mutilated the first set of med stones. I am really wanting to know why that paring knife chipped while using the flats of new stones when it did not using the older stones.1623 wrote:I think this comes down to pressure.
It doesn't take much for the stones to do their job especially on the corners, and from what I understand even less pressure should be applied as you progress through the grits.
When I get down to the Ultra Fine I'm pretty much letting the blade float across the face of the stones.
To my hand they feel the same. When sharpening the D2 grip they seemed to feel more aggressive/coarse than the older stones. I attributed that to the flays of the older stones seeing many blades. The chips are tiny maybe 1/64 ish long...slightly less deep than 1/64.Cliff Stamp wrote:Do the flats of the new stone feel the same (flat/smooth) as the flats on the other stones?
How big are the chips?
The dulling was my wife...she cuts green peppers like she is going after solid steel and bashes the knife into the cutting board...which is usually the glass one we have sitting out and not the nice ones we actually have for cutting things.akaAK wrote:Possibly the edge, which may have seemed sharp was only a bur, this would explain how it became dull so quickly and then potentially the second sharpening "broke" chips of stressed steel out of the edge.
I use the sharpmaker exclusively as well but am by no means close to an expert. Someone else with more knowledge may chime in.
Welcome to the forum by the way.
Why would anyone use a glass cutting board? Why is even there glass cutting boards, they kill edges really quick.PharmD921 wrote:The dulling was my wife...she cuts green peppers like she is going after solid steel and bashes the knife into the cutting board...which is usually the glass one we have sitting out and not the nice ones we actually have for cutting things.
Speed has always been slow, old stones and new. Force was as much as I could use previously, now not so much. With the kitchen knife and the new stones I wasn't pushing hard at all. The same amount of force I used when I got them scary sharp, and chipless, using the old stones.Cliff Stamp wrote:How much speed/force due to you use?
With the new stones on the kitchen knife I was using minimal force. I killed the old stones pushing like a mofo. To lap the stones can I just rub them together or what would you suggest I use to lap them?Cliff Stamp wrote:With heavy force then even small irregularities in the surface of the stones are likely to damage the edge. Decrease the force until the surface of the stones evens out, or lap them to even them out.
I rubbed them together some and sharpened a large knife of unknown steel that we keep in the drawer. Got it nice and sharp and no chips in the blade. I think I will dull and sharpen this knife a few times to get some use on the stones.Cliff Stamp wrote:I would just use them and let them wear in, but you can rub them together, lightly to speed up the process.