How to boolean this?

HELP how to?
WHEEL 1.3dm (15.2 MB)

Hello- the long treads that go around the whole tire have extra surfaces that needs to be removed.

-Pascal

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I would make displacement (render mesh modifier) rather than real tire tread. Displacement reduces Rhino model file size and it is easy to change.

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@pascal What happen in this case? sorry for multiple post for multiple doubts but in this case when I run boolean in the letters the inward surface disappear and the other treads just fail when I tried to boolean


Hello - in the file you posted there are several open objects -

If you Explode then Join these close up and can be used.

-Pascal

ok that works por some treads but I still have problems with the letters
and the last boolen returns me this: