Trouble getting edges to join

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.

Std Bath Sink.3dm (3.0 MB)

Thanks In Advance!

Hi Molly -

When you run the SelBadObjects command, a surface will be selected. I’ve copied that to the side - you can see that it’s missing an edge.

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.

-wim

Thanks you, worked great!!