Here is another version of one of the world's smallest router bit with a bearing guide, "The micro Router bit" ! This small tool has been made to quickly cut wood sunglasses frames parts with a smooth finish. The replaceable bearing and the cutter are 10 mm wide, with a 3mm shaft, best suitable for Dremel, Proxxon and the usual microtools.
Totally handmade, this quenched-steel bit is made from british "Crusader" carbon steel (Stub). To prevent rust, apply mineral oil or WD40-like spray after use.