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 - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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