I couldn’t go to sleep with that vent still open, especially right after cleaning it out. So, I ran outside with some calipers, then I did a thing in SolidWorks:
Then got it ready for printing
Boom, fits first try!
It’s shorter than the flooring
Took maybe 2 hours to print. I had it going while I cooked dinner. Total plastic usage: .06 lbs, or about 3% of a roll of filament. The filament I used (WYZ ABS) is $17/kg. That’s $.51 in plastic for the print. Electricity averages $.09/kWh, and the printer pulls 300W at full tilt heating, and 110W after it’s heated up and printing. Let’s just say, worst-case, it cost another $.11 to print, in electricity.
Less than a dollar!