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He Machines Drill Bits
Here's a tip for do-it-yourself machinists submitted by Robert Rottinghaus of Jesup, Iowa.
  He used his lathe to convert two large drill bits with a Morse taper to an R-8 shank. "A lot of today's drill presses don't have enough vertical clearance to use Morse taper adapters with a big drill. For example, I have a Bridgeport mill that doesn't have thrust bearings in it and is made for milling only. As a result, I can't crank the drill press up high enough to put all my adapters on. If I do, the sleeves will hit the table.
  "So instead I chucked the drill bit into my lathe and machined it down to fit the R-8 spindle. Do the machining before you saw off the Morse taper flat. You then will have a counter sink hole for the tail stock on your lathe."
  Contact: FARM SHOW Followup, Robert Rottinghaus, 5121 S. Canfield Rd., Jesup, Iowa 50648 (ph 319 827-1311; fax 319 827-2425).

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2006 - Volume #30, Issue #1