Magnetic Noteboard 

Magnets are printed as inserts in the component. Designed for Magnets Ø8 mm and thickness smaller than 2 mm. 

Print stop is implemented as a filament change in the gcode. Simply mount the magnets and then continue printing. Make sure that the magnets do not protrude over the edge and all plus poles face the same direction. 

PS: For all german speakers which are wondering about my chores in the title picture. Hubert is the name of my vacuum robot. :-)