Rigid NXT Shop Vacs already have a rotating coupler on the end with a locking attachment. I designed this to attach the Rigid shop vac to Dewalt DWE6421 and DWE6423 orbital sanders. This adapter has a feature that helps still utilize the locking attachment and ensure it stays on.
I recommend eight perimeters on the "toothed" section to ensure it is sufficiently rigid. You can add a modifier in slicer to add more perimeters in that section of the print. It should be printed with the toothed side down, no supports required, and relatively quick print.
The author marked this model as their own original creation.