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MarkK

05:29PM | 10/19/98
Bvmisc
I need to drill one (4") hole through my poured concrete foundation wall (8"), and two holes through my (4") slab. I plan to use an electric hammer drill w/ 1/2 inch bit, drilling holes then chiseling out. Does this sound like a good approach? Would perhaps a drill powered by an air compressor be more effective? Thanks.

David, Moderator

07:04PM | 11/20/13
Member Since: 11/15/13
175 lifetime posts
This should work as long as you have a fairly decent hammer drill. I have discovered that it is best to use a smaller bit such as a 1/4" or 5/6" They seam to drill faster than a larger bit. Also, when you purchase your masonry bits make sure they are percussion bits.
Thanks
David
writer@ www.fixupthishouse.com

David, Moderator

07:38PM | 11/20/13
Member Since: 11/15/13
175 lifetime posts
It would probably be best to spend a few bucks to rent a heavy duty rotary hammer drill. Would drill much faster and hold up better.

David, Moderator

07:50PM | 11/20/13
Member Since: 11/15/13
175 lifetime posts
A standard hammer will probably burn up on you.
Thanks
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