Using the router and circle jig is a fast way to make circles in wood without the CNC. The laser template for the jig can be found here.
Basics on how to use the acrylic bender. The laser cutter file for the stepper motor mount in the video can be found here.
Two quick tricks for adding a little more finish to laser etched acrylic.
A tutorial on how to make quality dials for potentiometers.