[EricH]

50. Connect the battery's terminals with a pair of bolts.
51. Use a drill (press) and file/sandpaper as a lathe. I understand the BeachBots go through at least one lathe of that type per year on average.
52. Power on a mill with anything other than a tool in the cutter. (The bar used for tramming in the head survived, but the gauge didn't! And no, that wasn't me.)