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Posted on Drill press bit wander issue..

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JustJoe

1554 posts in 696 days


#1 posted 06-23-2013 06:24 PM

Normally I’d say cheap drill = lots of runout but the symptoms don’t really match up in your case. If there was a lot of runout you would have trouble with the real small drills, not just the ones over 1/4”. If you’ve got bad runout you can break a 1/16” bit just by waving the board in its direction. What exactly do you mean by angled? Does the bit wander? Are we talking about 1/2” deep mini-holes in balsa wood or 4” deep in red oak?

Deep holes tend to wander. Deep holes with cheap or dull bits tend to wander a lot. If it’s deep holes, the bits and the feed rate might be the problem. If it’s short holes, then the bits probably aren’t the problem.

You say “consistently at an angle other than 90” Is that the same non-90 every time, say 84 or 87.6? That could mean the table is off, or the drill is so cheap that the quill isn’t perpendicular to it. If it’s a different angle every time, then maybe the table is loose, or I’d go back to those drill bits.

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