About this 3D model
On the Lid, Use 25% Infill, Use Cubic or Gyroid. Use a Brim, Brim width 7, Brim Object Gap 0.18... Pause layer on layer 20 to add magnets! On Bottom, Use 25% Infill, Use Cubic or Gyroid, No Brim. Use Support on the top of the hole, Tree Supports work well Touching Build plate.... Pause at layer 644 to ad magnets! Uses 8, 8mmx3mm Magnets Total.