Neil -- I'll keep that technique in mind should arthritis make it too painful for me to turn the chuck key by hand. Of course, when that day comes, I...
The clear plastic is a good idea, but you should use polycarbonate (Lexan) which won't crack. PVC lumber and trim are readily available in home store...
Steve, What is the primary voltage of your DC motor controller? If it is 120 volts, it could be a result of the rectifier creating a neutral - ground...
Ok, to make the 3rd-level backups I keep offsite, I end up copying a single large (1.2TB) file from one USB drive to another...typically takes about...