Hi

I'm designing a headtube. I want the neck to flow nicely into the top of the headtube.

I succeeded at making a solid of different surfaces to make the neck flow into the headtube. All there's left to do is combining the two bodies. First the two bodies were merely intersecting, but now I made sure they have plenty of intersecting volume. Still the combining feature tells me that the operation fails due to geometric condition. Does anybody know what the problem is?

Thanks,

Jip