This is a 2 axis mirror galvanometer. I want to build a resin printer such like the Peachy and this is my best attempt so far at a mirror system. This is a combination lasercut / 3D printed project. The bobbins that form the electromagnets are 3D printed, as well as the mount for the laser diode. (The laser is this housing: http://www.ebay.com/itm/110887324993 with this diode: http://www.ebay.com/itm/400520595273). The frame is laser cut from 1/4" luan plywood (which is actually 3/16" thick). All the screws I've used are 4-40 1/2", the standoffs are 5/8" 4-40 standoffs. The magnets for the galvanometer were purchased from Harbor Freight. The acrylic is 0.080" thick and is laser cut. The thin sections of the acrylic act as a springy hinge that want to return to center.
My tests so far show that this is a functional design but is not incredibly accurate or repeatable when tracing the beam over a pattern.
See a video of it drawing a circle on a board painted with glow in the dark paint. http://www.youtube.com/watch?v=HGBZ9PvHIxY