Customizable filament spool divider

I want to use some empty filament spools to store electric wire - but my wires are not that long, so I could fit more than one on a spool. So - parametric spool dividers it is!

The OpenSCAD file can create circular dividers for spools that are made from two halves held together with screws (e.g. ESun). It can also output 60° or 120° sections - so 6 / 3 pieces can be glued to the spool core to form a circular divider. Just enter your spool outer diameter (OD) and inner diameter (ID, core diameter), the desired total height of the divider (HD) as well as the desired material thickness (T).

The script can also calculate the required height for a given inner spool width (CH, core height) and number of divisions (NDIV). If you set NDIV to a value greater then zero, the automatic calculation is active and the divider height value (HD) is overwritten by the calculated value.

Here's an example: A spool with an inner width of 60 mm should be divided into 4 sections. The material thick