These three adaptors allow the combination of my DUPLO compatible pillars of different widths. The visual appearance is inspired by a “Ground support” or “Truss tower” from Event / PA technology.
The pillars can be found here -
2x2 version: https://www.printables.com/model/1116708-duplo-hubelino-compatible-pillar-2x2-8-high
3x3 version: https://www.printables.com/model/1117844-duplo-hubelino-compatible-pillar-3x3-8-high
4x4 version: https://www.printables.com/model/1117870-duplo-hubelino-compatible-pillar-4x4-8-high
The adaptors sized 2x2 on top Pillar_3x3_2x2.stl and Pillar_4x4_2x2.stl will print without support. The adaptor Pillar_4x4_3x3.stl was printed with tree supports.
The author marked this model as their own original creation.