To change router bits, first unplug the SM1 Spindle from Origin and remove it from the spindle mount. You can read a full description of this process here. Press in the collet lock. Using the included 19mm wrench, loosen the collet locking nut by twisting it counterclockwise.
Insert your desired cutter. Depress the collet lock and use the 19 mm wrench to tighten the collet locking nut. In order to prolong collet life and clamping strength, we do not suggest the use of cutters with a shank diameter less than 1/4" (this includes 6mm shanks) in the 1/4" collet that ships with Origin.
Note that we also offer a 1/8" and a 8 mm collet, as well as a collet kit for use with Origin, in our Store.