Warning: The current version of this belt broke after just a day and a half of use. The limiting factor appears to be tensile strength. To address, I'm considering polycarbonate filament and/or even thicker extrusions.
Use the models that Cisco provides for his original Caterpillar Belt. Just print them at a different scale, with substantially different slicer settings, as outlined below. The result is a taller and stiffer belt which I hope will be suitable for supporting a holster. Belt height is 38mm (1½"), a sturdy size widely supported by holsters which still fits the belt loops of most pants.
This setup is suitable for nozzles from 0.35 to 0.85 mm.
This setup is suitable for nozzles from 0.25 to 1.0 mm.
The author remixed this model.