If you are a cheap, errr, frugal Scotsman like me, you may want to make your own. Start with a good 1/16" pin punch. Chuck it up in a drill stand, and use a file to reduce the diameter to 0.050". The reduced section only needs to be about 1/2" long. You can use a small round bit (or a dentist's drill bit) in a Dremel to put a cup point on the punch.
Buck
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