Extending and Collapsing Cylinder Generator

This is a configurable OpenSCAD program that generates a set of collapsible cylinders that can be printed using vase mode. Also included is a simple "end cap" generator for making a simple prop staff similar to a "jo" or "bo" staff. The end cap is meant to be press fit, so that it can be removed if any of the cylinders break and need to be replaced.

Due to tight tolerances this will require a printer and filament that is consistent enough to print in vase mode without any artifacts or defects. If there are defects, it will likely be a problem when the cylinders extend or collapse.

In the program, each cylinder is generated from an iteration number, from 0 to N, with 0 being the innermost, and N being the outermost. For bottom horizontal shells, cylinder 0 zero should be printed with around 4-8, and the rest of the cylinders with 0. The "end cap" piece should also be printed with 4-8 bottom horizontal shells. Another important parameter to set is the extrusion width. Here