Archived from the Tools In Action forum (How To). This thread is read-only.
Drill chucks generally have three pieces that clamp down on the drill bits. It sometimes happens that the bit slips just a bit while the drill is being driven into metal or sometimes even hard wood, and the chuck pieces raise a burr on the shaft. I am not certain that the nomenclature that I have used is precisely correct. But you know what I mean. If I use a drill bit gauge, the shaft will not fit into the proper hole, because it is no longer fully round the entire length of the shaft. I have usually tried to smooth out the burr with a whetstone or maybe a fine file. if the burr is really bad, I may use a grinding wheel. I have to know if there is a better way to remove the metal that causes the shaft to sometimes not settle properly into the chuck later on, and even cause a bit of wobble.
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My method is usage of a fine file to knock off the burr in that instance.