How to show the path of a moving body?

[encephalon]

another attempt of that sort

"Unsolvable" geometric problem

I got a strange question. The goal is to push a cylinder through a block while it gets rotated by 90°. As it is not possible to sweep a surface, I can only get near to the correct result. See this: [image] The cylinder cap makes an interesting surface, which shall be exact (and not as in my approach). Any ideas? CP_CylinderChallenge.3dm (255.1 KB)

i guess many instances of the movement and using this new tool to solidify the geometry could work