Magnetic Card Health Track Indicator

This is meant for use with tabletop games which use a health track on a card (for example Monsterpocalypse). This uses a total of four 1mm x 6mm round magnets (watch your polarities!). You can print a top and a bottom, or print the top piece twice to avoid having to flip the tracker when flipping two-sided cards (like Monsterpocalypse monster cards) - just make sure you remember which side the card is supposed to be facing. Of course dragging these along cards can scratch the cards. I recommend sanding both sides smooth after installing the magnets to reduce this. I also recommend sleeving cards before using this. I suggest turning the magnets towards the card when using sleeved cards (to increase the magnetic pull to compensate for the increased thickness) and turning the magnets away from the card when using unsleeved cards (otherwise the magnetic pull may be too strong).