How do I draw this?

I’m trying to draw this exhaust manifold. A simple pipe structure.


I was trying to make a simple rail to run a circle along. But I can’t create a soft bend in my lines where they meet (see lightened oval highlight). I can’t seem to add a fillet to my curves at this joining point. What am I doing wrong? Or will Rhino simply not make a filleted corner in 3D space?

Hello- try BlendCrv here.


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Pascal thank you x 1,000,000. Works great.

Kind regards-