10 to 18 TPI for medium-thickness metal, and about 8 TPI for thick metal. Buy bimetal or carbide-tooth blades for longer blade life. Cut Metal Lath and Mesh with a Grinder Metal lath and hardware ...
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.