Spiral staircase

[Joseph_Oster]

This has been done many times on the forum.

https://discourse.mcneel.com/search?q=spiral%20stair

Dividing a spiral staircase glass balustrade in to equal lengths with gap in between

Fixed that: [Spiral Staircase_2021_Jul11c] Spiral Staircase_2021_Jul11c.gh (72.7 KB) But noticed that the balustrade surface diverges from expected curvature at the top, caused by Extend Curve in your code. I’ll let you fix that. [Spiral Staircase_2021_Jul11c2]