Cheap DIY laser line for arc-measuring goodness : r/XWingTMG
Lightsaber Homemade handheld laser pointer 450nm 300mw blue laser styropyro Drake Anthony youtube video « Inhabitat – Green Design, Innovation, Architecture, Green Building
This is the most frugal DIY clamp for high speed laser triggers
How to Make a Burning Laser: 9 Steps (with Pictures) - wikiHow