Spiral Stairs - OpenForge 2.0 Magnetic

I remixed xloud's spiral stairs to work with the new OpenForge 2.0 1" magnetic bases (https://www.thingiverse.com/thing:2740279).

The down stairs only work with the hollow-centered magnetic openlock bases (base.plain.square.inch.2x2.magnetic.openlock.stl). It fits down into the hollowed space to make it look like the stairs are going down.

Supports will be needed.