Compare regular magnets & ceramic magnets… What’s the difference between the two? (I’m specifically interested in magnets for the 1″ button size.)
Are they the same size? How much can they hold? How weak/strong are the two? Ceramics are stronger, right?
Ceramics don’t have adhesive? They’re just held onto the button part by magnetism? If you’re pulling one off your refrigerator, are you likely to just pull the button part off and leave the magnet part behind? Is there a recommended adhesive for attaching them to the backs?
Are there any mailing issues with either magnet type? Meaning, if you’ve got 4 magnets glued on a card inside a little bubble mailer, is that good enough or do they need any additional packaging/padding to keep the package from attaching itself to some random piece of postal machinery? 
