Adaptative ribbon spool

A ribbon spool with a 10cm wide side and a 3cm wide core. Minimal core is 2cm with left an right print and can be extend by 2cm for each extender you print.
Thread is fusion 360 standard with a 0.1mm tolerance increased.

You need to print at least side two times and interior and exterior core.
And as many extender as you need.
Each core parts take about 40mn to print, and side need 90mn each.