Fastest way do a spiral stair.

 From:  MO (MO_TE) 8 May 2023  (16 of 26) 
11084.16 
"EllipticalHelix" node

Address:
Curves2/EllipticalHelix

Elliptical Helix script:
https://moi3d.com/forum/index.php?webtag=MOI&msg=5328.1

Elliptical staircase :)
Attachments:
AttachmentEllipticalHelix.js