Hey there everyone!
My first post/thread here on SMcars

lol
Well i use Rhino as my main modelling program, and i was having a problem while trying to make this tire.
What Im trying to do is a boolean difference for the treads of the tire. Usually ive done a boolean union and modelled the opposite part of the tire, but i thought that it would look more realistic this way.
Now, the problem is, that whenever i tell it to do a boolean difference with ALL of the pieces at once, the majority of the pieces dont end up making a proper boolean. (also it takes like 5 hours at least lol) . But if i take each piece one by one, it works, but that takes waay too long. My point is that it should work if i select all of them, right?
i tried to do it many times, i even make all the surfaces again, but no luck.
how can i get this to work ? lol

Im pretty much a noob,

so any help is much appreciated
(PS: and yes i have made sure that each surface is intersecting with the large surface

)