parametric hose adapter

I needed an adapter to be able to hook up my dust collector (https://www.thingiverse.com/make:724045) to my Dewalt 735x Planer. The connection on the planer didn't fit the hose that came with my Ridgid Vac. I designed the adapter with two female ends to fit the planer and the hose.

I made this using CadQuery (https://github.com/dcowden/cadquery or https://github.com/CadQuery/cadquery) and FreeCAD. All of the diameters, lengths, and thickness are easily adjusted.

The adapter has tapered connections at each end, meant to fit the slightly tapered hose and planer connection. By being tapered, they still fit snugly if the diameters are a little off (any error just changes how far the hoses seat into the adapter). The taper I used was 1/20 (1mm change in diameter per 20mm of length - very slight taper). While the taper will overcome differences in diameters, I wanted to make the adapter short, so I needed a few tests to get the depth of insertion right (0.2mm change in diameter