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  • #61
    Re: busting concrete

    Best thing the rough-in guys could do for you is sleeve the risers with Armaflex. That 1/2" is a good place to start when your bustin' stuff up.

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    • #62
      Re: busting concrete

      Concrete is usually cut with diamond blades but before that identify the type of concrete which you want to cut. Always keep in mind that don't mix water and electric so be careful.

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      • #63
        Re: busting concrete

        Originally posted by blue_can View Post
        Sure I do - have you ever been to a stone fabrication shop?. Just make sure to use keep the water away from the motor and use a GFCI on the cord.
        Better idea: Don't use a GFCI and do the "happy twitch dance" when the shocks start coming. Have someone record it, put it on youtube, get a zillion "hits" and collect royalty checks while you're in physical therapy rehabbing.
        Time flies like an arrow.

        Fruit flies like a banana.

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        • #64
          Re: busting concrete

          Originally posted by PLUMBER RICK View Post
          here is a link to the husqvarna posted on amazon. 14'' blade with wet kit installed. Amazon.com: Husqvarna Construction Products 968378401 K3000 Wet Electric Saw: Home Improvement

          secondly, a garden hose is a bit of an overkill for a 4.5'' grinder. i get by with a spray bottle to keep the blade cool and dust to a minimum.

          indoor cutting is typically an electric saw, hydraulic or air saw. unless you have a large warehouse or a propane unit, most indoor is not suitable for gas, no less a 2 stroke cut off saw.

          a worm drive skill saw and blade is under $200 and does a great job with concrete to 2.5''. once again a spray bottle is all that's needed to keep the dust and heat to a minimum. a garden hose is too bulky and too much water. even my mk courter saw and polisher are only a 1/4'' ice maker line.

          if there is a blade guard, then 99% of the water is shielded from the motor. the blade guard deflects the slurry and spits it back down. of course a good trick is to wd40 everything to keep the slurry from sticking. it also will minimize water from conducting. ever been to a trade show when they run an electric drill submerged in a bucket with the operator holding onto the drill. it's sprayed with wd 40 or lps to coat the electrical from water. of course it's a trade show and is used for that purpose.

          as far as a little buzz. that comes when cutting live sewers with a 4.5'' grinder with no blade guard. then the water is spraying everywhere. almost impossible to cut inside the pipe with a blade guard.

          then again rubber gloves would prevent any buzz. i usually use leather gloves that get wet but are much thicker for a kickback.

          rick.
          Trivia info: Water by itself is not a conductor of electricity. It's impurities in the water that may be conductive.
          Time flies like an arrow.

          Fruit flies like a banana.

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