Wanted to make concentric circles today with equal line lengths. Making concentric circles has been something I didn’t work on, give much thought to. I’ve done projects with concentric circles and made them with cylinder cuts or torus objects. This time I screwed off.

First this array of six square planes was created, then I applied a screw modifier.

In other projects, I may apply the screws separately to ensure that the outer prism is more circular. However, this test worked well.