How To Cut Square Holes In Wood. To cut a square hole in wood, you need to follow these two steps. Find out the center point of the wooden sheet;
Use a pencil, a framing square and a scale to draw the exact size of square you are looking for. How to do it position the tip of the chisel on a corner of the square you’ve drawn tap on the chisel with a sledgehammer as hard as possible keep tapping until it cuts through the entire wood thickness repeat the above steps for each corner cut the square out Use a jigsaw to cut out a square hole.