Right optics for a 100W Setup

[wildseyed]

I see that there is an optics kit for 40W in the Kits Area. What would be the difference in selecting optics for a 100W setup.

[macona]

Low power machines use gold plated glass optics. Higher power machines like the one you are building use gold plated silicon optics.

I got name brand mirrors off ebay for a little more than the price of the chinese glass ones.

http://www.ebay.com/itm/Two-NEW-silicon ... 840wt_1110