OpenForge 2.0 Mag 3/4 Spiral Stair Up

OpenForge 2.0 OpenLock 4
As requested, a roleplaying terrain feature/accessory to depict a 3/4 turn (270 deg) spiral staircase as in a corner tower. Recreated the spiral stair effect by xloud - Spiral Stair Up
(if you notice, different treads). Set for OpenForge 2.0 (25.4mm sq tile) and able to glue to the standard E OpenLock base, or MAG base.
See here for bases:
Cut Stone http://www.thingiverse.com/thing:1910969
or Plain http://www.thingiverse.com/thing:1910974

Note! have not printed