Board Thread:Off Topic/@comment-25396609-20161112202743/@comment-24534644-20170124090731

Could work, but if you want it to swing off and then back on again like a lid or cap, then there would need to be some sort of mechanical hinge, and regardless of how small it is it would obstruct the lance's piercing ability.

And we know your thing isn't a drill, at this point we're just talking about drills.