Maintenance product for your button machine:
* Silicon grease to lubricate dies
* Tube 20g (lasts very long)
* Prevents loose Mylar foil slipping on the side (air bubbles) or releasing Mylar foil / popping out. (see FAQ)
* Regularly clean your dies with a dry clean household cloth.
* Then spread a drop or 2 on the inside of the die (especially the (crimp) die where you put the back sides).