my bead pins keep breaking...

[comfits.livejournal.com]

does this happen to anyone else? i went to make earrings last night & as i would bend the bead pin w/ my pliers for the little hook, it would snap! it must have happened about 5 different times! i thought that maybe it was because they're cold?? i stuck the tip in my mouth to warm them & that seemed to help about 75% of the time.

so is it because they're cold...or am i insane???