Blue Spot Tools Diamond Sharpening Whetstone Set, 3-Piece (Extra Fine, Fine, Coarse Grit, 6 x 2-Inch, Blue)

Did the job great, saved me a fortune in replacement saw blades 👍

I used these to sharpen wood chisels together using a Stanley jig with the stone lying on a very flat granite surface. The product cuts easily and quickly to achieve sharp edges. The course stone is helpful to quickly remove metal for damaged or chipped chisels to get down to desired angle. The finer stones are good for finishing the job. The diamond surface wears down to an extent with use so the initial grading becomes finer than the stated fineness. However, I can easily live with that. The grinding surface is on quite a thin plate and I suspect that can be tricky and lead to uneven results unless placed firmly on a very flat and solid surface. Again, I used a solid and flate surface with success and I am pleased with the product. I prefer these to a wet stone.

this set of diamond sharpening stones comes in 3 grades, coarse, medium and fine and are relatively inexpensive compared to the price of a good India stone. They are a bit short, making them slightly awkward if used in combination with a honing guide as you will have a limited run, but for hand sharpening and honing thery are good and will help keep a good edge to ground chisels and plane blades. I have fixed mine to some short lengths oo timber so I can hold them in a vice: keep well lubricated and cleaned and they are an efficent sharpening tool.

It sharpens very well and fast, however I will remove one star because it is too small, which makes it very difficult to sharpen large knives or small swords on a table and one star for the super slippery plastic bottom, which means you have to nail it or somehow confine it on the table in order to sharpen at all.

Did exactly what I wanted! Worked perfectly and will have a long life with me here.

This set of sharpening "stones" is really good value for money. After having browsed around for sharpening stones that I can use to sharpen/hone my chisels and my plane irons, the choice seemed to be either spending a small fortune buying individual stones of more or less exotic character and price, or give this set a go.In order to get the best results with this set I glued the plastic side of the stones to a scrap granite tile. This ensures a flat grinding surface and stops the stones from sliding around on your workbench. Initially I thought that the stones were all a bit on the rough side, not really matching the "coarse, fine, and extra fine" description, but after sharpening a set of 6 chisels the roughness has worn down to fit my expectations. I was then thinking that I had already worn the stones out, but that was not the case. I have just re-established a 25 degree bevel on my 1 inch chisel (that had a 30 degree bevel so a lot of material had to be taken off), and the coarse stone did that just fine in less than 5 minutes.Not knowing what the grit of each stone is can be an issue, but as the grit of a diamond stone will always wear down gradually, and the abrasive value deteriorates accordingly, it seems not to be a too big issue for me. After having taken the initial roughness out of my set of stones I am guessing that the grits will be somewhere in the area of 200 for the coarse, 400 for the fine, and 800 for the extra fine, but that's just a guess.A set of expensive diamond stones might very well last a lot longer, and be of better overall quality, but for my requirements this set works perfectly and can be replaced at a fraction of what an expensive set costs.NB! A lot of people have been complaining that the colour coded plastic part and the "stone" come apart with use, but I have been spraying mine with loads of water, and worked them quite hard as well, without this happening so far.

Good sharpening stones

Good for the price. There are few points which could be improved. They are small and slide a lot during sharpening, you will need to fix them on a board or come up with another idea. Also using glass cleaner (glass, not window cleaner !!!) instead of water will improve results. I sharpened knives a chisels, both worked well. You may not get an extra sharp edge with these plates, some stropping or a finer stone advised. Overall they are fine for kitchen knives but i would get something better for tools or expensive knives.