also learned this tip from watching the guy at the music shop change strings--to use a rechargeable screw driver or battery opoerated drill to turn the pegs- set it on low and turn away!! no wrist ache , no carpal tunnel..for this i have designed an adaptor which holds the pegs.i once saw a library worker turning cassett tapes by hand with a pencil - i suggested they might usde a power tool, as they needed to rre-wind each borrowed cassette tape which was turned in. looked like such a pain to do manually.