Sounds good, the compressed air nozzle is supposed to stop flame outs but I find it depends what your cutting and and the power speed you use etc.

We make a tonnes of engraved wooden signs and perspex point of sales displays and photo engraved granite etc for our branches. Really easy to use, compared to our engraving machines.

 

They are good fun. The air assist helps reduce the charring on the cut edge in woods, as well as stopping flames.

I engraved some glass bottles for Xmas presents (www.benjaminalderson.com) on a friends laser - definitely needs an improved extraction system as even with a mask it got bit raspy on the throat :S

My laser I'd almost up and running - got power on/off to laser tube working, just need to sort out the power level selection now.