k40 superhead air assist blow dual laser pointer cross lines adjustable focus

**Warning!**, not printed yet, the inner part will certainly not fit/slide because I did not adjust it, and was planning to sand it until fit theen adapt model later.

This a remix from 3 great design and ideas I found around. The main one is here: https://www.youmagine.com/designs/k40-chinese-lasercutter-air-assist-with-cross-lines-laser. I just love the design and the laser pointer idea, and I adapted it to integrate two other great ideas: 1)from http://www.thingiverse.com/thing:445354 (com