What are some source for a power supply for a 20w CO2 laser? What should I look for in a power supply? Also were can I get lens and mirrors?

Edmund Scientific, if they are still around had optics, books, etc. Also lasersurplus.com....better get yourself some laser safety glasses.

I may have a RF co2 laser by next week, now I just need to design a machine for it.

The fact that you can't see the beam is pretty scary. Especially when you have to bounce it around with mirrors to get it pointed where you want it.

True but this one is air cooled, so I will be able to mount it vertically so no need for mirrors, also you can attach a visible laser so you can "see" where the beam is going. I plan on wearing glasses ever-time I run it.

Yeah, make them the wrap around type of shades.

Can you recommend a pair?

I found a great place to buy lasers and power supplies at 75 -100% cheaper than in the US- http://www.made-in-china.com/showroom/steveluo66 email them he gets back very fast.

So Paul...don't leave us hanging.....what were the prices....