I immediately Sharpening of drill bits (6, 10, 18, 22) tried !!! These were a single great result so sharp nichteimal when I bought it. Be sure to read the operating manual !! Accurate handling is required, the results speak for siech then himself. Also sharpening various knives scrapers, etc. was easy and as I said, the result is HERFOHR OUTSTANDING! This devoted to the grindstone so slowly turns and he runs in a water there is no annealing even to a warming of about sharpening knife, drill or other. Just a great unit with very stable accessories! Even the delivery was very fast !!! Within 4 days was all there from D A.