Hi;

I am using Solidworks education series through the university server in the US. I am trying to model a threaded rod with UNC profile (3/8-16). All the tutorial online are based on a triangular profile; but in my case the profile is a bit different (see the link below). I have created my spiral and sketched my profile, but I keep receiving rebuild error;

Any idea?

p.s.: see the attached file.

p.s.: I am a beginner in Soidworks, so please explain it in simplest possible words.

Link for UNC profile: Unified Thread Standard - Wikipedia, the free encyclopedia.