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Subject - Cutting holes in sheetrock
Bill Bamford Whenever you need to temporarily open sheetrock:
Cut out the sheetrock section in one piece using a holesaw on a 45 degree angle with the holesaw pointing toward the center of the hole. Always cut past a stud or joist so that you have something to nail to when you are ready to patch the hole (try to miss any nailed sections of sheetrock). When you are ready to repair the hole, carefully place some sheetrock mud along the 45 degree angled cut in the wall. Then press the piece of sheetrock you removed back into the hole in the original orientation. Tack with sheet rock nails or screws (if necessary). Add more sheetrock mud on the joint, and nail heads. Call your painter and tell him to bring some sand paper. This method makes a strong path with little work.
eric240v If you ever want to pass an thinwall conduit through a drywall wall very neatly with little effort, this is a great trick.
Take about a 12 to 24 inch section of whatever size conduit you are using and take your hacksaw to the end of it. Cut into the end to that you make a makeshift holesaw (about 3 cuts make six notches in the end. Then mark your spot, and start by tapping and turning the pipe where you want the hole. Just when you thing you've broken the paper, simply take the pipe and spin it back and forth like you are trying to start a fire, In a few seconds you will have a nice clean hole keep going through the other piece of drywall clear to the other side with virtually no spalding at all. Now you have such a tight fit you generally won't need to patch it. You may need to clear out your pipe a couple of times. I've used this techniques hundreds upon hundreds of times all the way up to 2" EMT.