I measure and center punch a sharp dint. I then measure again. Most of the time I will be slightly off center. I take a hand drill with an 1/8" drill bit and angle the drill and walk the dint back on center. I then hold the drill straight and drill with the 1/8" drill. I check with a small square or a square block as I drill using a different 1/8" drill bit for the check before I am in real deep. With a 5/8" bolt I would then drill a 1/4" hole in the straight 1/8" hole followed with the tap drill for 5/8. Sometimes after the tap drill size is drilled thru I can pick out the threads with a small sharp pick. Most of the time I chip out the threads with the tap. I make sure I back the tap up after a 1/4 turn to make sure the threads are broken off in chips. This propbly takes less time than typing how to do it. The secret is to drill a small pilot hole straight and on center. also find center on flat enough surface that you can measure and walk or draw the center punch to the center.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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