International Association of Penturners - View Single Post - Homemade closed-end pen mandrel
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Old 04-16-2018, 06:18 PM   #3 (permalink)
Join Date: Jan 2018
Location: Bay area
Posts: 126
Photos: 0


That's not a bad idea. However, I use those punches in a drill chuck to square my blanks, and some of the most common pen sizes I encounter don't have close enough to what I'd call a "tight fit" to ever want to turn it up to 3k rpm. To me, a proper pin mandrel should be very close to a press fit, and with a few exceptions, I haven't gotten that with those punches.
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