If you have a dirt/rock mix then placing the 1 1/2 " holes would take just a few seconds. Going into solid rock took me about 5-10 minutes for each 1 1/2 inch hole and about 5 seconds for each 5/8" holeįor the 1 1/2 " holes I ended up making a 5/8" pilot hole then make the 1 1/2/" hole and that made it easier I was placing my t-post in solid rock not just rocky ground. The 1 1/2 " bits for the T-post work but its more work and I would not want to place a long fence using it. The 5/8" bits cut through solid rock like butter (good for re-bar) home depot will not usually have what you need for bits I ended up using a hand held rotary hammer/hammer drill that just plugs in to a portable generator.īosch and Dewalt make specific Rock bits you can get online. I did not want to have to rent any heavy equipment, generators or compressors to place mine.
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