I purchased a Glowforge and expect it to arrive in a week. Super excited! I plan to keep it 20 feet from the nearest window. I realize I will need to purchase more 4" exhaust line but am wondering if I need an in-line fan due to the length.
There’s lots of discussion of inline fans throughout the forum with great information and even product selections. You’ll find an inline fan greatly improves the quality of life around your Glowforge while it’s operating; you can turn off the built-in fan through a GUI option and the inline fan is much quieter.
I ended up upgrading from a 4-in fan to a 6-in fan so I could move more air and have less smoke hanging around inside my Glowforge during operation.
Yes, the built in fan has a hard time with exhaust runs more than 6’ long. You’ll definitely love the bonus quieter operation @timjedwards talks about.
Even if you were right next to the window, I would recommend an inline fan. Just to reduce the noise. The 6 inch models work well for most people.
I agree with Mark and the others, you do need one with that exhaust length but the noise reduction is amazing. Put the fan as close to the building exit as possible, that way the entire length of the run is under negative pressure and any leak will be sucking air instead of blowing smoke. Welcome to the funhouse!
There are numerous posts here in the forum that in a nutshell say 'why didn’t I do this sooner?" in regards to an inline fan. Get a good 6".
Search ‘inline fan’.
Or wait for your brother to upgrade his 4" to 6", and grab his leftover 4". Right, @timjedwards? I’m perfectly happy with my hand-me-down 4", so don’t fret if you can’t afford the bigger one.