Drilling long pen blanks - Woodworking Talk - Woodworkers Forum
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post #1 of 4 Old 05-12-2011, 08:36 PM Thread Starter
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Drilling long pen blanks

Does anyone have any pointers as to how to prevent the drill bit from wandering off center when drilling long (4.5") pen blanks? I'm using a Colt parabolic bit in a drill press, using a wood screw (clamp) to hold the blank. The blank is not moving, but at times the bit seems to wander. Any tips are greatly appreciated.

That bowl was perfect right up until that last cut...
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post #2 of 4 Old 05-13-2011, 07:14 AM
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Once get everything lined up at drill press, use a small square to insure blank is straight in my Chinese machinist vice. I frequently remove chips while drilling. I go less than ” before backing out. Only have one parabolic drill bit from Berea, and could not get a straight hole unless cleared chips more frequently. Normally use brad point or twist drill bits for drilling blanks. One hand operates drill press lever and other holds shop-vac nozzle while drilling.
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post #3 of 4 Old 05-16-2011, 02:11 AM
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For that length, make a right angle jig, so it clamps solidly in place; maybe 3" tall for added support. Peck drill those deep holes.

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post #4 of 4 Old 05-16-2011, 12:31 PM
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To drill pen blanks I've been chucking the blank into my lathe and using a jacobs chuck in the tailstock to hold the drill bit. Seems to work fine. Anyone do it that way or know of reasons why I shouldn't?
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