Hit the backer board with the palm of your hand. For a triangle cut not along an edge, mark the outline with a pencil, and drill a 3/8 inch hole at each of the 3 points.
Use a drill to make several holes inside your outline.
How to cut concrete backer board. You can use the carbide blade to clean up any remaining piece of the concrete backer board from the cut. Place your hardiebacker cement board on a flat surface and mark your cuts with a straight edge. Then stand the board up, brace it behind the cut line with your knee, and bend.
Use the pencil or an indelible marker to mark a dot at the center of the intended circle cut. After that, you make a starting hole with a drill if you’re cutting into the middle of the board or start by the edge if not. Score along your straight edge, applying firm pressure as you go.
You may need to hit the concrete backer board several times in order for it to break away cleanly. Snap the concrete backer board. The primitive method is to cut the mesh with a utility knife and then force the board to break along the cut line.
With an aggressive saw blade follow the lines to each 3/8 inch hole. Cutting cement backerboard, especially my preferred brand hardibacker, can be difficult and frustrating. One of the easiest techniques used to cut cement backer board is to score the sheet and then snap it along the cut line.
Lay your cement board flat, and draw a line with a carpenter’s pencil. Wear a respirator, eye protection and work gloves when cutting. To make a punch out hole you have to draw an outline of the hole with a pencil or pen.
All you need to do is grab a straight edge for guidance and run your scoring tool along the cut line. If you’re using hardiebacker 500 cement board or hardiebacker cement board with hydrodefense tm technology, you’ll want to score a few. A jigsaw will cut out your punch hole.
In this video i'll go over five of the most commonl. When you have finished making the snapping pattern, you can press the cement board and then snap the other part of the board by using the utility knife. Cut the straight lines if you prefer having a smooth and also efficient output, you can use the power tool.
A reciprocating saw with an abrasive blade will also do the trick, and so will a backerboard scoring knife, which works like a standard razor knife but with a carbide cutting edge. Push the punch hole out. It should give way, breaking the desired piece.
Draw a circle with the speed square around the dot to make sure that the circle is at the correct spot. Before cutting durock or any cement backer board, set up a work area outdoors. The first thing you want to have is safety glasses to protect your eyes.
This video shows you how easy it is to cut and make holes in cement backer board. Mark the cement board cut point. Position the concrete backer board against a worktable with the scoreline out a bit.
Make sure that the water keeps running throughout the entire duration of the cut. Cutting cement board with a drill. Measure and mark the workpiece.
Cut cement backer board with professional results. How to use a tile saw to cut cement backer boards? To cut with this, you mark your lines and shapes and place the cement board on the table so that you won’t cut anything under it.
But for circular cuts, a jigsaw equipped with a carbide. This specialty board produces a very fine silica dust that can be harmful if inhaled or if it gets in your eyes. You can cut cement backer board with a circular saw or grinder equipped with an abrasive or diamond blade.
Turn on the saw and allow water to fully saturate the blade before making the cut.