4in dust collector tubing connector
thingiverse
I was using a dust collector vacuum to remove loose fill fiberglass attic insulation. Needed a connector to splice two of the 4 inch hoses together. It was X-mas eve and the stores around me were closed. Couldn't find an existing design online, so I threw this together on fusion 360. I will warn you, this design is very inefficient and takes awhile to print but it worked well enough in a pinch. I'd probably scale Z axis to 50% or more next time. I secured the hoses with a couple zip ties and haven't noticed any leakage.
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