They rout cleaner, faster and leave a smoother finish than straight bits. Both Solid Carbide and the less expensive High Speed Steel bits can be used on FMT jigs to produce excellent results, however Solid Carbide bits are stiffer and hold their
Leigh two flute spiral upcut bits are
made in America.
All bits with a cutting diameter greater than 1/4″(6.35mm) are made with 1/2″(12.7mm) shanks. The extra stiffness reduces vibration and
chatter. The 1/4″(6.35mm) louver bit also
a 1/2″(12.7mm) shank because of the
added forces with cross grain routing. Bits
cutting diameter of 1/4″(6.35mm) or less have 1/4″(6.35mm) shanks.