So I can tell you, the area between the screen and window is already piling up ash… That’s in 2 day of use. I was sort of surprised at how much stuff is building up, and if I was keeping it through the window (instead of permanently installed from my basement workshop via rigid piping) I would remove the screen (which I will do next week and clean the sill)
As you may have seen in my noise video post the flaps work fine.
Now I notice a bird feeder right near your vent. I can promise you no birds will be coming to that feeder with your GF venting nearby. A) it is surprisingly loud and B) large amounts of smoke. Birds who don’t understand how awesome the Glowforge is, will naturally fly away from fire/smoke…