You can use anything from a Milling Machine all the way down to a hand file, a drill press, hand drill or a Dremel tool for the holes and a couple of punches. I think a lot of people use a Dremel tool or file and a hand drill. After my first one it took about 15 minutes to complete the second one. Don't waste your time in getting the lower as the 'Anti's' are always trying to close this avenue of getting a frame.
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