3D printable hose flange

[AhnoldZ]

And a flange for the other end:

3D modeling approach for flange design?

Hi – I want to work up a design for an exhaust port extension for my GF. I understand why the current design was limited to ~15mm, but I continue having a hard time getting a good (odor-tight) seal at that end. I have a 3D printer and figure I can easily print a female to male adapter fitting both the outside diameter of the GF exhaust and the inside diameter of hose/ducting. Using sketch-up, I can make two primitives with an appropriate wall thickness, one with the correct ID and the other w…