Spool stand - Keep your spools in order!

A simple spool holder.
The black spools at the bottom are 0.5Kg spools, But 1Kg spools will fit fine as well. Each additional expander is 15.5cm tall, you can place a drop or two of super glue to hold them all together or just keep sliding them on the more filament you get.
Build time: Bottom stand - 3hrs @ 0.3mm layer height
Each expander, roundly 1.5hrs at 0.3mm