Dust Collector Coupling with 2-1/2" Connection

thingiverse

I am outfitting my Fab Lab with a dust collection system. Choosing 4" schedule 20 sewer pipe to run along the back of my countertops proved to be a smart decision. Originally, I had planned to have a 2-1/2" hose adapter at each station, but that would have necessitated a Schedule 20 to Dust Collection fitting, a T-coupling with a 2-1/2" reduction, and a street elbow, followed by another Schedule 20 to Dust Collection fitting to return to the Schedule 20 pipe, and proceed to the next workstation. To save at least $20 for each workstation, I designed this custom coupling. The top features a male-end to connect a blast gate and a 2-1/2" hose. It is precisely sized to fit on my Makergear M2 printer.