This is a laser mount that fits the Adafruit laser modules (tested with https://www.adafruit.com/products/1057) Upper laser mount derived from http://www.thingiverse.com/thing:11572 and modified to fit Adafruit laser. Lower base is designed to attach to 20 mm T-slot extrusion, like this one: http://www.thingiverse.com/thing:10261 I used this to build a simple laser scanner. I chose to print the holes for the dowel a bit small and drill them to size. The mount fits the laser without modification. A writeup on the scanner project is available here: http://shortcircuitsandinfiniteloops.blogspot.com/