How To Cut Square Holes In Wood. Then use a jigsaw to cut the corners. Use a pencil, a framing square and a scale to draw the exact size of square you are looking for.

Mark it with a pencil; 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 Find out the center point of the wooden sheet;