What I learned about drilling concrete

[6PakBee]

I bought one of those el cheapo Chinese SDS hammer drills about 20 years ago. After hundreds of holes ranging from 1/4" to 7/8" it's still hammering away. Which I think is surprising. I was on a power plant erection that used only Hilti, the TE-15 and TE-60 models, and those were always breaking down.

 

[MOPAROFFICIAL]

We have a 2 post, we cut and put caissons in

 

[Oldmanmopar]

Before that manual hand drill all we had was a roofing nail and a rock to hit it with. Luckily my job was to hit the nail with the rock while my little sister would hold the nail.

 

[Jadaharabi]

We have a 2 post, we cut and put caissons in

When I was in the 3rd Cav at Ft Bliss Tx we rebuilt a Japanese mountain howitzer and a limber for pulling it. This was for the horse platoon. We always wanted a cassion to pull it but never found one. An there you have some.

 

[ironbuilt]

I was a Union Ironworker in NJ for 16 years. Hilti was my hammer drill of choice, and nothing beat concrete anchor bolts. we would drill and hammer in a 3/4" anchor bolt to mount an I-Beam that held up a building. Hammer them solid, then tighten with an impact.

 

[6PakBee]

Yup, quick-bolts are the way to go. Drop ins (Redheads) are the last choice.

 

[Minercar]

Forty years ago (hard to believe that) when I was studying to be a mining engineer I was on the mine competition team which consisted of jack-leg drilling, hand mucking, track laying and and hand steeling which was using a "single-jack" hammer (2 to 4 lbs) and a chisel tool to drill holes in rock. You were timed and then they would measure the depth of the hole. Hit, turn chisel tool and repeat. After doing that for a couple of minutes as fast and hard as you can that hammer felt like it weighed 100 lbs.

 

[4spd340Swinger]

I was a Union Ironworker in NJ for 16 years. Hilti was my hammer drill of choice, and nothing beat concrete anchor bolts. we would drill and hammer in a 3/4" anchor bolt to mount an I-Beam that held up a building. Hammer them solid, then tighten with an impact.


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Hilti is the way to go! My TS-22 is 30 years old and still works like new.

 

[missing linc]

Just think years ago when all we had was this. It separated the men from the boys. Sometimes I catch myself dreaming of my dad standing behind me yelling "faster Steve faster" Put your weight into it Steve.

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I remember watching my grandfather using one of those.

 

[Ironracer]

Yes, Oldman, that really built character, didn't it? The young whippersnappers today are totally spoiled by things like the SDS bull point bit. I did buy one of these, but haven't had a chance to use it yet. I am really looking forward to it, though:

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Those are great for breaking up crete