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Is there a way in 3D to create a sort of 3D pipe where the cylinder has a thickness but is hollow inside. Sort of like how a hole can be cut out of a slab by using Voids. I know I can trace around the circle to create a segmented slab and then another segmented slab inside of the outer circle and make that a void. Was hoping for a function that would go as quickly as creating a window hole in a 3D slab.

Similarly, is there a way to create a 3D cylinder that then has an indented reveal that does not extend all the way through the cylinder and leaves a raised ring around the cylinder?

I would use covered polylines for all of them.

Oh, wow, was that easy. Thanks Josh and Mark. Some of the hair on my head will now remain attached for a few more weeks.