You need to use 2 of the thicker magnets ,and plenty of glue to make it work, it takes a lot to seperate them, believe me i have made loads of them for bridesmaids ,and guests,without any problems at all.the feedback i had from these was all good.(I made one up in silk and gave it to my grandaughter to use before i even let them loose on customers. as she is a bit of a tomboy). no problems at all. I also use this method on handbags,using the double thickness magnets and never had any problems there either. try it !