Spool holder for BCN3D+ printer for 1kg and 2.3kg material spools

This is a mod for spool holder of the BCN3D+.

The BCN3D+ originaly comes with a spool holder for 1kg spools; the problem is how to hold those big 2.3kg spools.

This mod allows to use 1kg and 2.3kg spools, by just moving a couple of parts in a few seconds.