Great tool. Solidly built and should last a very long time. The cutting chisel was very sharp on arrival and I kept sharpening it until it was razor sharp and cut a very very clean sheet of Lexan and probably could have made glass if I had been careful. For a very small complaint a star is deducted (I would have liked to put half a star then I would have given 4.5) - if only they would make a graduation along the horizontal bar so you can set the radius without measuring. It would be really easy to do and it would make it a world class tool.