Compare router speeds
Routers with variable-speed motors run between 8,000 and 26,000 rpm. More important than speed at the bit shank, though, is a bit's rim speed, the velocity of the cutter at the farthest point from the center of the shank. For example, a 1 ⁄ 2 "-diameter bit spinning at 10,000 rpm runs almost 15 mph at the tip of the cutter. Increase the speed