Clothes dryer vent quick disconnect / dock

Update April 21: Was asked to upload a flange and a cap. I haven't printed these parts, but i don't see why they wouldn't work. The flange is 6mm thick, the cap has a 6mm thick closed wall on it.


I recently came into ownership of a K40 laser cutter. But how do I get the fumes out of the house? I didn't want to use a window contraption. It gets really cold in Chicago. Hey, why not use the dryer vent?!
There are plenty of other designs out there. Commercial and printable options use a series of clips or magnets for retention. I wasn't a fan of either of those. I wanted a more substantial retention method, yet clean. I didn't want to see bits of wire or frayed ends either.

3 parts
A hexagonal wall flange that can slip around a 4" vent.
A heptagonal nut. Yes, a 7 sided nut. Why? Because they're cool.
A cylindrical hose insert that captures the nut.

The whole thing works sorta like a compression fitting. It's just the size of your hand...
Slide the hose insert into the hept