Seriously, I use a Hitachi corded drill rigidly mounted to my bench. Its the model w/ the variable speed rheostat wheel mounted in the trigger. Let the drill do your work. Use the Lee or Sinclair spinner. Select the best RPM for your tool and have hands free operation. ...... The drill costs about 35 bucks and speeds case prep very nicely. Being mounted horizontally it also accommodates grinder & polishing wheels. You can buy a mounting bracket on line that allows the drill to run horizontally or vertically. The most productive tool in my reloading room. ..... Hitachi model # D10VH......... Bench clamp Dico 541-41413