Chop-style saws that use special metal-cutting carbide-tipped blades not only slice steel tubing, angle iron and flat stock with precision, but leave the cut edges cool and nearly burr-free.

A rotary burr size depends upon the work it has to perform. A Tungsten carbide rotary burr can run at higher speeds than similar HSS cutters, yet still maintain its cutting edges. Burr is a rough edge ...

Silicon carbide is harder than aluminum oxide ... Coarse or extra course products are designed to provide rough or initial sharpening of the cutting edges of knives, blades, or other cutting tools.