BooleanUnion Failing

[shaunakpatel1]

How do I BooleanUnion these two?
It’s a Spiral modified by CageEdit and then simply applied Pipe to it, and then on top, there’s a Torus with the same diameter as the pipe’s end face.
I tried doing BooleanUnion, but it keeps on failing.
Please help, thank you.

[menno (Menno Deij - van Rijswijk)]

Please post a 3dm file with the geometry in it.

[martinsiegrist]

Don’t create multiple topics with the same problem. You’re wasting peoples time doing that.

How do I make a self-intersecting solid, not have those surfaces inside?

[image] Want to get rid of the self-intersecting parts of this, so that I have a perfectly hollow inside. Please help.

[shaunakpatel1]

Spiral Tower Share.3dm (1.3 MB)

[shaunakpatel1]

Sorry, I thought they’re to be posted separately. I’ll keep this in mind.

[martinsiegrist]

I unioned the overlapping parts first and then everything together.

Spiral Tower Share.3dm (4.5 MB)

[shaunakpatel1]

Perfect! Thank you so much. I want to practice doing this myself now.
Could you please tell me how did you draw those open surface pink circles? I know _PlanarSrf but this doesn’t look like you’ve used that.

Thanks again.

[martinsiegrist]

I extracted the ends of your pipe with sub-object selection.

This can be done with ctrl+shift+LMB

[shaunakpatel1]

OH WOW! Hey thank you so much for helping me out on this!! It works like a charm!! I wish I can develop thinking skills like you to be able to hack through rhino commands like you did today to help me out. Brilliant!!