I'd like to give as much information as possible. I do wood engraving and vinyl sticker cutting and frankly there's no protection with this model.If you want to use it, I think you'll need a chamber with activated carbon (check the site to see if they make them). After that, all the engraving I do is in a well-ventilated room and always under supervision (I've already had a case of a mini-flame as a result of incorrect use). (I've already had the case of a mini-flame following settings that were too strong on wood) and you should know that the lens gets dirty quite quickly (+- every 10 hours of operation I clean it - glass product on a cotton bud is enough otherwise the laser loses precision) concerning precision it's max 254 dpi +- basic photo quality but long to engrave (yes : speed too fast=less accurate)! To sum up, I have 3 engravers, 2 of 5 watts and 1 of 10 watts. The 10 watt is just as accurate but the beam protection and Mini Ventilo are more effective and the laser maintenance is less tedious.And for the record, I've also tried placing an engraver in a slightly damp room and had a very bad experience - everything oxidises quickly (aluminium marks quickly and so do steel shafts, so be careful). I hope I've helped you.