3 Pieces Diamond Sharpening Stone Diamond Knife Sharpener Plate Honing Whetstone for Kitchen Sharpening Dull, Blunt or Tired Edges (250/600/ 1200 Grit)

I am a hobby woodworker who frequently needs to sharpen chisels and bench plane irons, and this set works very reliably for those purposes. Considering the price and what diamond plates actually do, these are a very reasonable choice for many hobbyists who don't want to spend hundreds on high end equipment to get their tools sharp.I set these up on the Rex Krueger style sharpening rig - a flat piece of melamine - and glued them on with rubber cement. This is a key point in using plates like this, where flatness is key. Instead of relying on a thick steel plate which is trued and then has diamonds adhered, these plates are thin aluminum and the flatness is a product of the substrate you attach them to. That's a fine trade-off for me, as a piece of melamine is cheap and very flat.Some of the other reviewers said that the diamonds wore off of these really quickly and they stopped cutting. That is possible, and maybe they received a faulty product. However, that's a common misunderstanding when breaking in diamond plates - they will cut really aggressively when new until the loose diamonds on the surface wear off. This give the impression that the cutting efficiency has dropped off dramaticall, but what you're left with is the well-adhered diamonds which should stay on the plate and will continue to cut steel for quite a while. I can sharpen chisels and irons to a fairly high sharpness, pull the burr off with a strop (attached to the same sharpening rig) and slice paper from the side with the resulting edge. That's sharp enough for woodworking tasks!I can't speak to the longevity of this set as I've only been using it for a few months, but even a year of life out of a product at this price is admirable, and I expect these will last longer than that.Recommended!

ME. SIRVIERON MUCHO Y REPETÍ LA ORDEN POR MAS. CANTIDAD. Y SON MUY ECONÓMICAS EN EL PRECIO.

This is a $15 set of diamond plates. I wasn't expecting it to compete with my better sharpening tools. What I wanted these to do is cut the bulk of material from my abused bench chisels or other flat bevel tools so I'm not wearing out my better / more expensive stones and diamond plates. They do this very well.They're made from sheet metal. They need to be supported if you plan to use pressure against them. Laying them on a table or wood block works very well.The sheet metal was cut using a (dull) sheer that leaves a rough burr on one side higher than the surface of the plate and can gum up your tools if you hit it. File / grind off the burr and the problem is gone.

Pretty good stones. Used to sharpen a few knives, work well. I used the coarse stone to sharpen my 60 tooth carbide saw blade. They are a little bulky for that but work well to clean up the carbide tips. Its worth the effort. Took me 15-20 minutes for the 60 tooth blade but it might not be as good as new but went from a wood burner to pretty clean cutting again. I had dinged a couple nails by mistake and I was able to clean those ooops up also

First photo was after a different companies 800 grit diamond plate, nice smooth, no easily noticeable lines, though a decent camera lens did manage to barely pick them up.Second photo was after using the 1200 grit diamond out of this set. At 1200 grit (It's etched into the face of the plate - should probably be on the back) the finish should be much finer, but look at the heavy lines cut through the 800 grit finish, and not just one or two lines. I had to use the 800 grit plate again to get rid of these lines and leave a nice clean surface again.Was used with plate fully submerged under water for maximum lubricationWill keep these to try sharpening some knives & axes.PRO's:> Fast cut with all 3 gritsCONS:> very thin can bend easily of not on something solid> 1200 grit leaves a heavier cut pattern than 600 grit silicon carbide sandpaper.> grit size is etched into the grit face which may be part of the issue I'm seeing.