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 - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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