The t post are high carbon steel. They are as hard as most drill bits. That is why you are having troubles. The cobalt bits will work a little better but not much. Are you using any oil or cutting fluid while you are drilling???? If the post are loose where you can use a drill press plus oil/coolant then you may be able to drill them.
Like One of the other guys ask. Why go to all of this trouble when a clip on isulator is 33 cents each?????
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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