On Fri, 17 Jun 2011 23:40 -0600, "YES NOPE9" wrote: > > You can build a CO2 laser for cheap, it's old technology but it works. > > Lifespan is OK. > >=20 >=20 > What is cheap ? Say $500 if you are a good shopper and already have a junkbox of non-laser stuff. Less if you already know what works and what doesn't. Since you are only cutting a can you can use almost anything to sweep, you don't need galvos. Bob --=20 http://www.fastmail.fm - Choose from over 50 domains or use your own --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .