If you track my rantings, you know I recently have moved my ventilation (and fan) outside of my house to get back some quiet - here is how I made my inside fan an OUTSIDE FAN.
the first thing I did was put in a ‘drop’ (or a “T” ) to catch any rainwater / condensation, dirt, anything that would be bad for the Glowforge.
I pass the power and control cable thru a 1" hole, (that’s filled with removable plastic (in case…)
the encloser is to keep water / and vegas sun off fan, I used a storage container.
since I had the opportunity I put a roof cap on the top of my patio so the smoke is 'above ground and out of smell distance
4" vent pipe is pretty easy to work with
I decided I wanted to way to remove the fan completely to clean it, so I added a bottom stabilizer piece, and rubber gaskets so the fan locks into place with easily removable screws.
Finished product, I added a small piece of flex pipe, again for removal of fan
Here’s a look at the inside controller, this senses power and turns on fan automatically
i use it more to show me, unit is on and working, but of course at any time, I can manually override any setting