So I tested two cylinders rolling down a small wedge and found that the unioned cylinder doesn’t roll like the non-unioned cylinder. How can I make it roll smoothly like the other?
It is more bumpy for some reason:
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This is kind of cheating but you could try using a weld constraint to connect an invisible full cylinder to the union cylinder.
You would have to set massless to true and can collide to false in the union cylinder
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Roblox’s parts have perfect collision, that includes cylinders and spheres (with more faces). Once unioned, they lose that.
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Did you use PreciseConvexDecomposition? If not, try checking it on. (it’s in the properties of the union)
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Unions and MeshParts don’t always have the same physical shape as their rendered image even with PreciseConvexDecomposition enabled.
You can go to your Studio settings and there is a checkbox for Show Decomposition Geometry (I think) which will show you the exact physical shape that a Union or MeshPart has.
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