Quote:
Originally Posted by pmangels17
One additional point on the hand drills, if you have a choice between 3/8" and 1/2" chucks, go with the larger of the two. It will let you accommodate more tooling, and also in a pinch you can use it to drive 1/2" shaft on early prototype mechanisms (not all mechanisms can be powered by a hand drill, and a hand drill will not necessarily be a good representative of the sorts of power solutions you can use, but if you have a shaft and all you need to do is turn in, without much time to rig something up, a drill can be a good option).
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You could just chuck up a 1/2" socket into the drill, or a 1/2" nut driver. You could fit either of those into a 3/8" chuck. Granted it's one or two more pieces to buy/lose.