A dirty lens steals power and ruins focus. Here is the careful way we clean CO2 laser lenses and mirrors in the shop, and the habits that keep us from damaging them.

When a CO2 laser leaves tabs, char, or a half-cut, don't start by turning the power all the way up. Work through focus, dirty optics, speed and power, passes, and air assist in that order.

Air assist keeps the lens cleaner, reduces flare-ups, and gives the beam a clearer path. Here are the everyday habits we use, plus when an upgraded compressor is worth it.