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Other choice was to rent a Hilti for about half of what the Bosch cost. Then drilled it out to 3/4 inch in steps using 1/8 inch larger drill sizes. A 60 year old concrete slab. That hole actually was the slowest hole to drill. The Bosch bits took it all in good shape. Probably took me 10 minutes each hole because of all of the bit swapping. I mention the age because as concrete ages it continues to harden. I first drilled a 1/4 inch hole.
For the last 3/4 inch hole I used a bit made NOT by Bosch and the carbide tip chipped badly on the second and third holes. Sure a Hilti would have done a hole in 30 seconds and it should for what it costs. Needed to make 3, 3/4 inch holes 4 inches deep in a concrete slab. This drill worked fine using Bosch Blue Granite carbide bits. Caused by the hard aggregate in the slab concrete.
I love the planer, jig saw and angle grinder. I was careful not to stress the motor too much when doing this, but it could have caused the early failure. Second only to Hilti. I did have it for a few years but it didn't get a lot of use. It has a five year warranty and I'll be sure to hold on to my receipt. Overall, I'm a big fan of Bosch tools.
But I think I'll try the Milwaukee hammer drill next. I have to join the others to report that my drill burned out drilling 5/32" holes in concrete for Tapcon screws. The only mitigating factor here is that I did use the drill to mix thin-set mortar and drywall compound about a dozen times. I hear good things about their rotary hammers too.
Will use Amazon. Found Amazon.com to have best price on the internet, Drill came double boxed on date stated when ordered. again.
First thought my extension cord was unplugged.I have 14 of the 22 hoes complete and had to shut down.I had drilled about ten 3/8" dia by 3" deep holes about two months ago. I was drilling 3/4" dia holes 2 inches deep in concrete to install a pool cover when the drill just died. In addition, the chuck kept loosening on me.My first Bosch tool and my last.
It drove (8) 3/8" wedge anchors 2" into my sidewalk with no trouble in well under an hour. I am not a pro but I expect this drill would handle this type of job every day for some time. I bought this drill to install a gate in a sidewalk. It was "reconditioned" so I was a little concerned but it perfomed like a marvel for the price.
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