I’ve had my Glowforge for 3.7 years, and I don’t think I’ve cleaned my exhaust fan more than once or twice in that time. (Admittedly I’m not a super heavy user.) But I knew it was time when on my last wood cut there were puffs of smoke coming out the front of the lid.
I avoid doing the cleaning since I’ve got everything taped down tight with metal tape and I have to peel all that off to get at the fan (I have a Pro, so cleaning from the front doesn’t work too well).
Finally got the hose off and this is what it looked like:
I swear, I did not Glowforge any cats. Our cats are not even allowed in the Glowforge room. But where did all those hairy fibers come from?
It was a 2 hour job requiring multiple tools and a borescope. I forgot to take an after photo, but trust me, it looked a LOT better. I also cleaned the interior, especially around the front door that was caked with gummy soot. What really made me feel good was that I got it all started up afterwards without any errors.
Now I need to worry about the air assist fan. I have never even looked at it. I figure, I’ll wait until it tells me it needs it.