WD-40 vs. 3m Novec for the fan?

[Jules]

I wrote it up once…takes a couple hours and then you have to let it dry completely. (Still quicker than waiting on shipping.)

Caution: Dirty Pictures....or...How I Cleaned the Exhaust Fan

Update: 12/14/2018: Happily, the Glowforge crew has released an “easier to implement” cleaning regimen for the exhaust fan now…instructions for how to do it involve purchase of a special non-flammable degreasing spray cleanser and use of a special cleaning mode of the software…instructions here: Written up below is the old way that I was doing it…it’s a fairly labor intensive alternative that has worked very well if you are willing to keep up with it as you go along and not let it get …