Blue Spot Tools 19275 Diamond Sharpening Stone Set (3 Pieces)

Description

The BlueSpot 3 Piece 150mm x 50mm Diamond Sharpening Whetstone Set is specially designed for the quick and easy sharpening of small hand tools. Does not require oil lubrication, use with water. Includes extra fine, fine and coarse grit whetstone files. Specially designed for the quick and easy sharpening of small hand tools Does not require oil lubrication, use with water Includes extra fine grit, fine grit and coarse grit whetstones Review: Rapporto qualità/prezzo davvero ottimo. Consentono di affilare rapidamente, e le dimensioni e il peso ne permettono tranquillamente un uso "sul campo". Avvertimento per chi non ha pratica di affilatura: bisogna imparare ad usarle, e considerare che le diamantate sono piuttosto "aggressive", e sarebbe meglio farne un uso non troppo frequente. La qualità dell'affilatura dipende molto dall'abilità dell'utente. Review: 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.