Adapter for Harbor Freight Hercules HEPA Dust Extractor

This model matches the keyed/locking connector on the inlet of the Harbor Freight 12 gal Hercules HEPA Dust Extractor and allows you to plug in a standard 2.25" dust collection hose. The print will twist and lock into place exactly like the factory hose connector, and allows you to be more flexible with the dust collection accessories you attack to the unit. It also matches the hose connector for many common 5 gal bucket-based cyclone separators. 

I printed this in PLA with 4 perimeter layers to ensure appropriate strength.

Print in the current orientation. Support is required between the ring and the locking stud which fastens the adapter to the intake. No support required from the build plate itself.