Verify out these aluminium turning images:
Lebenskraft und der Dom
Image by C Koehn
Sculpture "Lebenskraft" by Andreu Alfaro. Mainz, Germany.
Aluminium Laser Pointer – Back
Image by Sascha Grant
I purchased a 405nm laser diode (Blue/Violet – practically UV) off ebay just lately and necessary a case to mount it in. So I have turned this from a length of aluminium tube for the physique and two pieces of aluminium bar for the front and back closures. The front closure doubles as a heat-sink. Everything’s held with each other with grub-screws. Runs off two AAA batteries which just match inside.
I believe it appears a bit like a light-sabre!