One of my knife customers recently asked me if I could sharpen his masonry chisels with carbide tips. One chisel with 2" wide, the other was 1.5" wide, the handle area about 6" long, 1" wide hex diameter on the handle. The striking end of the chisel was rolled over quite a bit from being hit with a heavy hammer. I had to use my angle grinder with cut off disc to remove most of the roll over, then I used a bench grinder to clean up and dress the end with a 1/4" chamfer. Important to keep the striking end cool with a dunk in cool water after a few seconds of grinding. Moving on to the tip end I used to pieces of 1"aluminum angle stock clamped to the shaft with a kant-twist clamp to make a stop that would rest against the top of the USB. Set the angle up to 45 deg on each side. At first I tried my SB-250 stone to grind with but this was going very slow. I then switched to a 200 grit CBN while using PB-Blaster on the wheel to prevent the wheel from loading up with carbide. That worked much better but later found out CBN should never be used to sharpen carbide...ugh. The best TORMEK wheel to use for these chisels would have to be the DC-250 (360 grit). A coarser grit, closer to 200 would be better. If your looking for another tool to add to your list of things to sharpen, this would be a good one. Stone Masons spend about $140 for a 2" wide chisel w/ carbide tip. The masons I've talked to found these very difficult to sharpen and would often just replace than spend time trying to sharpen.