The only real possibility for a fire when engraving is if something strange happens and the laser stops moving but keep firing - not much chance of that happening so it's not really a fear of mine. Even still, I won't leave the laser running, even engraving, unless it's anodized aluminum (99% of what I do anymore) or stainless with cermark.
Originally Posted by Kev Williams
ENGRAVING acrylics is pretty much never going to start any fires, there's never enough heat in any one place long enough to start any combustion, like quickly passing a piece of paper over a flame. Myself, I never worry about ANY raster engraving starting fires.
CUTTING acrylics, different story, like SLOWLY passing paper over a flame. I don't leave a machine that's cutting...
But, we're talking about glowforge here, where SLOWLY and ENGRAVING seem to be one in the same
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