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dragonsreach
This is a multi-part kit to enable you to build an eight-sided Gothic tower for wargames and small-scale dioramas. The floors are 10mm high each, so it would likely fit well with 8mm-scale, as well. The kit includes separate STL files for each part - ground floor, middle floor, three different roofs, and a floor with a surrounding balcony. Since these are individual files, you can build a tower to any height you wish by printing middle floors (and balcony floors) multiple times and assembling them with superglue. The pics above show several build ideas.