Just place in between the cushions and due to the adaptor it does not move around :) All have a maximum size of 250mm (Except the rectangle this is 310 mm)

Add 9 magnets on each tray and adaptor. These are the ones I use for my models: Magnets Remember to check the positive and negative side of the magnets so that they dont reject each other :)

Have fun printing :) Im waiting on my new filament and then I will add the makes right away!

Material: PLA Infil: 15% Supports: only for the holes - normal) Layer height: 0.2mm