Hey guys, just bought a small sealed CO2 tube from eBay. My ultimate goal with this tube (Providing it arrives intact) is to build a XY table. However, the optics are quite expensive, and considering I'd need maybe 4 or 5 mirrors, ZnSe doesn't seem like the cheapest option ($200 ish for 4 mirrors). I know regular mirrors won't work, because the glass infront of the reflective coating is opaque, but how about first surface mirrors?
I have also heard about salt mirrors, but I'm not sure if they are easily DIYable or efficient enough.
Cheers,
Dan