How To Cut A Large Hole In A Concrete Wall

Core saw or drill.

How to cut a large hole in a concrete wall.

When you re cutting concrete that is already poured and finished use a chalk line to mark the region. Get a friend to hold one end while you hold the other and run the line over the region to be cut. The best way to do it is by boring holes with a coring bit which looks like an oversize hole saw minus the teeth and pilot bit. I ve hammer drilled through concrete to sink anchors but a 4 inch diameter hole is a little intimidating until you have the right tool.

If you are going to cut a hole or drill through a concrete wall use the right tools to reduce the chance of damage to the wall. Scrape out the hole with a mason s chisel while dislodging loose or crumbling block. A core drill with a diamond bit is the best option for round cuts that you can pass wires water lines or other things through. These holes will mark the boundaries of the opening and help guide your cuts.

Sooner or later every building contractor has to run pipe or conduit through existing concrete walls. 5 line up the blade of a. In place of the teeth is a smooth or segmented edge studded with tiny industrial diamonds that cut concrete and rebar by means of abrasion. Designate the area of finished concrete to be cut using chalk lines.

Lift the line simultaneously from each end and slap it to the ground. There are many core drill sizes and each one is manufactured to represent the size of a commonly used pipe cable or duct. The size depends on the application. I just like to show you a little trick some time you have to install dryer went through the concrete walls all what you need is a cut off wheel and a littl.

Once you are done with the drilling it will remove the large center piece to leave you with a large hole. Before you start drilling. Here s a few pictures of the right tool. You will find most core drill bits coming in different sizes such as 2 inches or 4 inches.

The walls at our new place are 6 inch thick concrete it s an old naval base and we needed a few holes for vents. A core drill is a drill bit which cuts large holes from masonry and concrete removing the centre part of the hole core as it drills.