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Reply by stefang

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Posted on How can a standard sized drill hole be accurately enlarges?

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stefang

16123 posts in 3532 days


#1 posted 11-20-2015 10:29 PM

Klaus No, I don’t have a step drill and I don’t have time to order one.

Ron Thanks for the tip, and Yes, you are right, drill bits do make a slightly oversize hole and you are also right about the difficulty of re-centering, but I have a plan for that. I draw a circle the same circumference as the gear with a compass, then I drive small brad in the mark made by the compass leaving it just proud of the surface. I line up the gear with the circle and give it a little tap onto the brad to mark my center. I do have a lathe and that’s a good idea about turning the hole to size. maybe the best idea yet.

-- Mike, an American living in Norway.


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