I created a spiral staircase for a 1-in20 scale building. There are two models: v1 is the base model; v2 is a single mesh with wear sculpted into the steps.
Overall dimensions:
100mm Diameter
272mm Height from floor to top step
12mm Pole diameter
8.15mm Step height - about 163mm (6 3//8”) in real world measurement.
I added two supports (120 degrees apart) to support the stairs to make it into a freestanding item. Make these from a piece of material the same diameter as the central column. In my slicer software, I cut off the top of the column and stretched it. After printing, I cut and filed to fit the underside of the step.
Scale the model to suit your requirements. Print using a resin printer, especially at smaller scales. You may be able to use a filament printer at dollhouse (1-in-12) scale. I printed my model in sections and glued them together.
| Spiral_Staircase_v1.stl |
| Spiral_Staircase_v2.stl |
