Sample Filament Master Spool using magnets

This is a handy master spool for sample filament which holds together using strong Neodymium magnets and hence it's very easy to swap filaments. To assemble it, you'll need two cylindrical Neodymium magnets 10x10 mm and two 10x2 as well as three dowel pins 3 x 16 mm.

It's best practice to glue the magnets and the dowel pins into the printed parts. Before you glue the magnets in, make sure they are not repelling each other.