The basement room where I have my glowforge has no windows to put the vent through. I did not want to put a hole through the wall, so I decided that the door was the best place to pass through. I therefore needed a system that would allow for temporary hookup, and easy disconnection of the vent, while remaining airtight. A ½ hr and $30 at Home Depot resulted in a mashup of plumbing supplies.
You may not want to cut up a door and do it the same way, but if you are in need of something similar, I hope that the description that follows is helpful. Of course, I didn’t take pictures until I was half way done, so you’ll have to use your imagination for some of it.
I cut a hole in my door just larger than the small pipe diameter on the closet flange. It turns out that there is a ridge on the underside of the flange that required a larger diameter, so there was a loose fit in the hole. The red rubber seal does come off to make the fit easier. Eight screws, and the closet flange was securely mounted to the door, with the flange itself outside.
The black “duct to duct increaser” is a press fit into the closet flange. I trimmed the length of the large diameter to about ½ of its original length with some tin snips.
The louvers are a bit of a tight fit, but will slide over the protruding large diameter of the increaser, and fit up reasonably close. It does not look wonderful, but at least it is a way to provide some protection to the vent. The glowforge has plenty of air pressure to pop the louvers up when in use.
On the inside, you can see the gap between the flange and the hole in the door. But after you put the rubber back on, the cap hides the gap pretty well.
The “3-4” sewer drain adapter” fits tightly into the end of the supplied duct, and fits up perfectly to the closet flange.
So, you just pull the cap off and press the vent on, and reverse the process when you are not using the glowforge.
Here is the list of parts that I used:
4 in. PVC DWV Gasket Closet FlangeSioux Chief 4 in. PVC DWV Gasket Closet Flange Model #886-GP $17.28
3 in. to 4 in. Plastic Duct to Duct IncreaserEverbilt 3 in. to 4 in. Plastic Duct to Duct Increaser Model #INC34EHD $2.38
4 in. Louvered Vent Cap in WhiteEverbilt 4 in. Louvered Vent Cap in White Model #LC4WXHD $4.88
3 in. x 4 in. PVC DWV to Sewer and Drain AdapterNDS 3 in. x 4 in. PVC DWV to Sewer and Drain Adapter Model #3P12 $3.90
4 in. PVC Sewer and Drain CapNDS 4 in. PVC Sewer and Drain Cap Model #4P06 $2.10