me: "you did remember to wrap electrical tape around the battery posts, right?"
ben: "uh..... no...."
me, with electrical tape in hand, running: "ho-ly-crap...."
robot: "ZAP SPARK ARC ARC CRACKLE..."
me, right hand burned, laying on the floor: "grrr always, always insulate metal used to hold batteries down... and wear mechanic's gloves."
yes, its true, the robot was just like a ford pinto, you rear end it and all heck breaks loose
well i learned some lessons that day, 1, never let a new guy on their own when they're just screwing something together, 2, always wear gloves if you even remotely think you should, 3, sparks are really hot and burn/hurt like heck, and 4, you can cut aluminum with a 12 volt battery
-Q