I used this saw to drill holes in a stainless steel tank. It cuts a clean round hole very quickly. I used it on my milling machine for a few holes but later found that it also works great with an 18v hand drill. If I use the right speeds and lube for the materials I'm using (e.g. the tool lasts almost forever. The hole size is nearly ideal for 1 1/2" sanitary pipe welds.