All of these pieces were printed with TPU 95A, 0.28 layers, 25% grid infill, 2.5 mm3 flow, 240C nozzle, and 140F dryer.
TPU can stand the torque of firm twisting into place, but the flimsier pieces (eg, slotted guides), need more work and maybe needlenose pliers.
The author remixed this model.
Changed the shape to half hexagon.