A lot of my sonic experiments involve the humble piezo bender disc. The problem is, getting them with leads soldered from Radio Shack costs more than the benders alone in bulk, there's not much choice in size and resonant frequency, and cracking them out of that plastic package they come in can damage the disc inside (I've ruined two that way, at $2 a pop). Piezo benders can be had for super cheap in bulk from Mouser, Newark, and a bunch if other places, but they come with no leads attached. So my question is, does anyone know how to solder leads to piezo discs without damaging them?
Thank you for the help.