[shine]

hello all,just trying to find out about quality flex shafts and proper technique.my first experience wasn't a good one.i was using a harbor freight flex shaft designed for use with a hand held drill.when it wasn't breaking at the drill chuck it seemed to work pretty good,only lasted me about an hour before i had gotten tired of repairing it.i don't know if it was poor technique or poor product,or both.i don't have 300-500 bucks to spare at this point in time and was hoping someone could point me in the right direction. i'm looking for a flex shaft that will screw onto a 1/2 in. shaft and handle 3,000 rpm. buffer.and whats the best wat to keep them from breaking?