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Old 09-22-2008, 04:04 PM   #1
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Tapcon into concrete.


I am applying extruded foam to my concrete walls and I see a lot of references to hammer drills. What is the difference between a hammer drill and a normal drill?

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Old 09-22-2008, 04:10 PM   #2
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Tapcon into concrete.


A regular drill just spins, while a hammer drill spins and hammers the bit. Concrete is a mixture of cement, sand and aggregate (stones). A regular drill will hit a stone and go no further. The hammering action will split the small stones and drill through them.

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Old 09-22-2008, 04:27 PM   #3
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Tapcon into concrete.


Thank you for that. I am currently using a normal drill...so now I know that if I run into something that I might just 'in and out' the drill a little...not that it is the best solution but it might do the trick!

Thanks again.
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Old 09-22-2008, 07:49 PM   #4
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Tapcon into concrete.


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Originally Posted by smorgdonkey View Post
so now I know that if I run into something that I might just 'in and out' the drill a little...not that it is the best solution but it might do the trick!
It won't.

A hammer drill hammers thousands of times a minute. You can't replicate that.
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Old 09-22-2008, 07:58 PM   #5
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Tapcon into concrete.


the termite is correct! it reminds me seeing a home owner using a sawzall as a hand saw unplugged. why bother.
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Old 09-22-2008, 08:53 PM   #6
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Tapcon into concrete.


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It won't.

A hammer drill hammers thousands of times a minute. You can't replicate that.
...but...but...I'm a machine!!


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Old 09-23-2008, 07:31 AM   #7
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Tapcon into concrete.


You also need to use carbide tipped masonry drills in your drill for making holes in concrete, hammer or otherwise. If you are installing Tapcons as the title says, you also need to be sure they are the correct diameter for your Tapcons, otherwise you will either break the Tapcons or they will pull out.
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Old 09-23-2008, 07:59 AM   #8
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Tapcon into concrete.


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You also need to use carbide tipped masonry drills in your drill for making holes in concrete, hammer or otherwise. If you are installing Tapcons as the title says, you also need to be sure they are the correct diameter for your Tapcons, otherwise you will either break the Tapcons or they will pull out.
Yes. Great point. I am using the bit that comes in the box with the Tapcons.
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Old 09-23-2008, 08:41 AM   #9
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Tapcon into concrete.


Also, use a nut driver in the hammer drill to install the tapcons with the hammering action engaged. Those that would twist off with a normal drill will sink like they were going into butta!
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Old 09-23-2008, 11:35 AM   #10
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Tapcon into concrete.


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Also, use a nut driver in the hammer drill to install the tapcons with the hammering action engaged. Those that would twist off with a normal drill will sink like they were going into butta!
He's kinda lacking the hammer feature.
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Old 09-23-2008, 11:52 AM   #11
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Tapcon into concrete.


As the op states
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...but...but...I'm a machine!!


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Old 09-23-2008, 12:25 PM   #12
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Tapcon into concrete.


I spent 2 hours trying to drill a hole in concrete with a regular drill with a masonary drill bit. I still didn't get it deep enough to be any good. A hammer drill did the job in about 30 seconds.
A regular drill drills by cutting, a hammer drill drills by chiseling.
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Old 09-23-2008, 02:38 PM   #13
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Tapcon into concrete.


O P if you dont mind me asking, exactly what is your project and what type of foam are you using?
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Old 09-23-2008, 09:01 PM   #14
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Tapcon into concrete.


Why not a proper construction adhesive?

A hammer drill is like a jackhammer vs. using shear pressure to break up concrete pads.
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Old 09-24-2008, 12:43 AM   #15
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Tapcon into concrete.


Another way to attach foam to concrete is to use "stick clips".

A stick clip has a large base that you glue to the concrete. Out of the middle of the base is a prong that's 2, 3, 4, 6 or 8 inches long.

You just impale the foam onto the sticks, and then push on metal "washers" (that will push on, but won't come off) to hold the foam snugly in place.

You can buy stick clips at any hardware store or home center.

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