This is a solder spool holder for larger spools ( 65mm long max).
It is specifically designed to fit the RS Pro 500g rolls, but fits lots of other brands as well.
These is the remix versions with a guide/holder for the loose solder wire.
Required hardware
For consistent finish print the 2 sides with the outside surface on the bed, no supports required.
The author remixed this model.
Meant for larger spool (65mm max)