I Discovered A Great Way To Go Through Concrete Walls (Air Chisel)

Discussion in 'Remodel Forum & Blog' started by driz, Nov 26, 2009.

  1. driz

    driz Member

    Joined:
    Sep 8, 2008
    Location:
    New York
    I needed to make a 6" hole through a poured concrete foundation in my basement. I got a nice new makita hammer drill masonary bit for my drill and found out how ugly it could be. Forget that. A real masonary drill costs too much and I didn't want to rent one so I thought what about my hand held air chisel. It is a cheap HF job I used a few times for cutting panels or drum tops off . Thats about all I thought it was good for. Then I tried it on the 15 year old cement. Wow does it cut. Of course it is still a 6 pack job and one hell of a mess but its a lot easier to use than a drill. Strangely it doesn't even dull the Chinese cheapo tips at all. What's best is that there is no need to lean hard on the gun and it doesn't take a monster air compressor either. Just put a little pressure on it and let the spring do the work. I bet I paid a whole $15 for the thing. Incredible. The only thing I wish I had was a longer set of Ajax chisels.
     
  2. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    Or you can get a core driller out there.
    They use diamond tipped drills, and they do a clean core without any dust.

    They keep the dust down with water, which also cools the bit.

    It will slice right through rebar.
     
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  4. driz

    driz Member

    Joined:
    Sep 8, 2008
    Location:
    New York
    Ah Yes But The Price $$$$$$

    Ah yes very true Terry, but as always its that on little thing, $$$$$$$$:mad::mad:. For you pros it is a gotta have item but for us once every 5 year slobs, well ya know.........
     
  5. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    chisel

    The problem with ANY chisel, and I have used my air chisel a couple of times but it is usually too "light" for major drilling, is that the deeper you go the narrower the hole gets.
     
  6. export!

    export! DIY Member

    Joined:
    Oct 19, 2009
    Location:
    Ontario, Canada
    Ahh.... so true with so many things in life.
     
  7. Scuba_Dave

    Scuba_Dave Extreme DIY Homeowner

    Joined:
    Jan 5, 2009
    Occupation:
    Used to be in IT
    Location:
    South of Boston, MA
    I used a combination of a sledgehammer, cement drill bits/hammer drill & air chisel to get a 3-4" hole thru for drainage
    It was from a crawl space under my sunroom out to my drainage pipe
     
  8. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    When I was doing new construction in my 20's, and I needed a hole big enough for a 3" waste line through the 8" foundations, I would only use a sledgehammer.
    Five blows with a sledge before the back side would pop out.
    And then a few more to make it large enough for the pipe.
    These were fairly green walls.

    If the walls have cured, then I like coring them.
     
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