This is a laser holder for the JTech Phototonics 2.8w laser. Before I simply used tape to attach it to the side of the extruder body, now it attaches onto the screw tops, and has a screw attached through it in order to quickly adjust z-height of the laser for better focus

print both at medium print settings (like .2 layer height at 40mm/s) should be fine quality, left room in the back for heat to easily escape.
attach 2 pieces together with 3/16 threaded rod (or whatever size you have) and have 2 bolts containing bottom piece and 1 bolt on top of the top piece to allow for easy adjustment (see images).