Legit just grabs your expo marker and sticks it to your most convenient magnetic surface. I hot glued in some 2.6x10mm magnets I got off amazon in the back. Mine printed in about 30 minutes but that can be sped up due to my lack of settings tweakage. for use with 10x3 magnets. I NEED TO ADJUST THE TOLERENCES, I MESSED SOMETHING UP AND DIDN'T NOTICE