Hello, I drew this part that I will use as a mold to pour rubber into to make another part.
I most likely went at drawing this in a weird way but can’t seem to get every thing to join and make it water tight to export an STL for printing. I have attached the file for anyone willing to take a look.
I’d model that centerpiece with the TCone command and delete what you have there.
The same goes for the surface at the bottom of this part. It currently doesn’t have a circular opening at the top, which is probably not the design intent here.