I like to think that I clean my Glowforge Pro pretty regularly. However, I also cut a lot of draft board, baltic birch, paper, and wood, so there’s lots of soot. The inside of my forge perpetually looks like a smoker’s lungs. I was using alcohol wipes, and then just straight up 97% Isopropyl acholhol on paper rags to clean the insides. It was barely adequate. It would clean, but there was always a gritty film left over and my glass window was always streaked with brown. I was going through my computer desk drawer and found that I still had a can of this:
This stuff is awesome for cleaning out that smoke crud. After one go-over my glass and casing are almost like new. Just spray it on a rag and rub. Worked wonders for my glass tube as well. I just went and picked up a couple of cans from Office Depot because I’m going to be using this a lot. It’s so nice being able to see into my forge without that brown film.