want help with a possible future steampunk instructible
okay, so i want to make a steampunk contraption. at first it was going to be a spring loaded gun like the derringer thing in sherlock holmes but with a huge gun (i actually have feasible plans in my head for that one.) but it drifted off to make an even bigger gun. i thought, and came up with an awesome idea.
a retractable Gatling gun arm. the gun will move forward, and backward, and will spin around. i made a 3d example to show what i mean, if i can figure out how to post it.