Magnet Smiley

2 magnets 6x3mm and 2 steel balls 5.5mm can be used.
With layer height 0.2 i made 2 "color changes",
the 1st for enter the magnets at 4.2mm the 2nd at 4.4 for changing the color.

Be careful that the magnets are totally inside the holes, else the nozzle may crash.

used ironing for print