I need help to drill hole in concrete

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  #1  
Old 01-31-02, 11:35 PM
Debbie Ann
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Question I need help to drill hole in concrete

I am trying to drill holes though plywood to attach it to an old, poured concrete foundation. I bought a 'masonry' drill bit, and I'm having no luck at all. Any suggestions?? Thank you.
 
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  #2  
Old 02-01-02, 12:53 AM
joeh20
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I need help to drill hole in concrete

You might make sure that the bit is carbide tipped. If that doesn't work you'll probably need a rotary percussion or hammer drill to go with you masonary bit.
 
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Old 02-01-02, 05:12 AM
Debbie Ann
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My drill bit said 'Titanium' (sp?). Is that a good bit? Thank you
 
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Old 02-01-02, 07:11 AM
pmg
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Originally posted by Debbie Ann
My drill bit said 'Titanium' (sp?). Is that a good bit? Thank you
 
  #5  
Old 02-01-02, 07:17 AM
pmg
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I don't believe a titanium drill bit is used for masonry.You will need a carbide tipped masonry bit with a drill,or ideally,a hammer drill.You can also purchase a tap-con set,which is nothing more than a masonry bit that comes with a box of high strength concrete screws that are one size larger than the bit itself.Simply pre-drill your holes into the concrete and later attatch your board by screwing the "tapcon" screws into your pre-drilled holes.
 
  #6  
Old 02-01-02, 01:33 PM
Debbie Ann
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Thank you and you are right, the bit I was using is a Carbide Tip.

I just bought another bit at Home Depot. It is a 'Bosch' brand 3/16", industrial hammer drill bit. Employee said this bit is better. I hope it works. Debbie
PS The Titanium coated bit was another bit I bought.
 
  #7  
Old 02-01-02, 02:02 PM
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Cool

You need two different bits.
One to drill the plywood, and a masonry bit to drill the concrete.
 
  #8  
Old 02-01-02, 02:29 PM
Debbie Ann
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Thank you. That's how I got the names of the two bits mixed up. The bit for the wood is Titanium coated and the drill bit for the concrete is Carbide. I used them correctly, one for wood and the other for concrete. When I use the new concrete bit I'll let you know how it goes.....
 
  #9  
Old 02-01-02, 03:12 PM
toucansam
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You might also investigate using liquid nail or some other industrial adhesive. This would allow you to drill fewer holes and still get a solid bond.
 
  #10  
Old 02-01-02, 04:51 PM
Debbie Ann
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That's a very good idea Toucansam, thank you.
 
  #11  
Old 02-22-02, 06:37 AM
Debbie Ann
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Talking

Well, as usual...I got great advice regarding my problem with drilling holes in concrete...I used an industrial caulk/adhesive. I should have been more careful !! :-)
I used an old piece of 2x2 and attached it to some old concrete outside...I wanted to be sure it worked...Now, I can't remove the piece of wood....it worked VERY well..hahaha :-) Thanks guys...
Debbie :-)~~
 
  #12  
Old 02-22-02, 10:22 AM
toucansam
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You can probably splinter the wood off of the adhesive, but you may be left with the adhesive on the concrete forever. LOL
 
  #13  
Old 03-04-02, 02:38 PM
amazingwomyn
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Drill a hole in concrete

You might find a problem with using a carbide tipped masonary drill bit if (1) the concrete is very old...as it gets harder with age; or (2) if it has larger, harder pieces of rock in it. You see, the carbide tip is hard but may chip or shatter if it suddenly hits a harder substance. Also, the method you use to drill may dull the bit quickly if you either put too much pressure and/or speed when drilling or if you use too little pressure and/or speed. A variable speed drill is a good investment. You can even get a hammer drill that has variable speed as well as a drill only option. With variable speed you can either hear or feel when there is a problem that needs to be adjusted.
 
  #14  
Old 03-04-02, 07:30 PM
Debbie Ann
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Thank you very much for your information. You are correct about the old concrete....... I'm learning so much from this web site and I thank everyone for taking time to help me....Debbie
 
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