Update 30.07.2022: v1 was stepped on :) This iteration has both plates removable, when someone steps on it to reprint only what is needed. Additionally, handle is added - works perfect. This one I printed in PLA.

For v2 don't forget brim for center part. 

Simple spool. For easy print it is made in two parts. I avoid supports and printing at angle for this distance takes to much space. PETG was requirement for me, so gluing was not an option.  

Peaces are connected with 2 M3 nuts up to 25mm in lenght. Start is locked with same nuts. 

Source files are included sou you can modify it to your need.