That is neat - I started to look at tinker cad tonight....was thinking of making a 1" npt to 3/4" SH adapter. After a bit of puttering and you tube watching I bought said parts from Amazon.

That sort of part would be perfect to make on a 3d-printer - petg material would work fine. So when the part comes in; I will mic it to and start playing again in the cad software.