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How to Cut a Square Hole in Wood: 3 Best Ways


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Regardless of your profession or hobbies it is always handy to have some woodwork skills. Knowing how to cut a square hole in wood can help you in a myriad of ways. It can assist you in creating holes for window fixtures or making a toy or a puzzle piece for kids to play with.

It is important to follow some safety guidelines before you commence as carpentry is an accident-prone activity. Follow these precautions:

  • Put on a pair of safety goggles to prevent the saw dust from entering your eyes
  • Try to work outdoors or in a room with proper ventilation
  • Use the power tools carefully and follow the instructions to use them properly
  • Your cutting tools should have a sharp blade for maximum efficiency and minimum risk of accidents

Materials and Tools You Will Need

To begin woodwork, you will need the following –

  • A Jigsaw
  • A Power drill / Chisel / Router (Depending on the method)
  • A measuring tape and a pencil
  • A sledgehammer
  • A framing square
  • A straightedge
  • Sandpaper and Oscillating tool

Now that you are all set, keep reading to learn the basics of how to cut a square hole in wood.

Step-By-Step Instruction to Cut a Square Hole in Wood

Learning how to cut a square hole in wood is one of the foundations of woodwork. This technique is required in creating most wooden joints like the tenon and mortise joints. You can also apply this skill for bigger projects like cutting out a hole for a frame or a window.

To cut a square hole in wood, you need to follow these two steps

Step 1 – Draw the desired square on wood

Use a pencil, a framing square and a scale to draw the exact size of square you are looking for.

  • Find out the center point of the wooden sheet
  • Mark it with a pencil
  • Using the framing square, draw out the square you wish to cut
  • Use your scale to measure the dimensions of your square

Step 2 – Choose your cutting method

There are primarily three ways of cutting a square hole in wood –

  • Using a Chisel
  • Using a Drill and Saw
  • Using a Router

Read below to learn how to cut a square hole in wood using the methods mentioned above.

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Using a Chisel to Cut a Square Hole in Wood

Use a chisel if you are working on a small project where you need to cut only a thin sheet of wood. The downside to using a chisel is that it takes time and effort. The final may not be very precise so you will have to be careful.


  • Place the tip of the chisel on one of the corners of the square you drew with a pencil
  • Using a sledgehammer, tap on the chisel as hard as possible
  • Keep hammering till the chisel cuts through the entire wooden sheet’s thickness
  • Repeat these steps for the remaining three corners of the square
  • Carefully cut the square out
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Using a Drill and Saw to Cut a Square Hole in Wood

To cut a square hole in wood using a drill, you will also require a cordless circular saw.

This method is useful in tackling bigger woodwork projects. It works well with both thin and thick wooden sheets.

It is easy to use a drill but operating a saw requires focus and experience. Ensure that you keep your hand steady for a smooth cut. To make the process easier, ensure that the drill bits are sharp and compact.


  • Choose and install suitable drill bits and tools
  • Pick the right drill bit and position it on one of the corners of the square you drew with a pencil
  • Deploying a high-powered drill machine, drill through the wooden sheet till you make a clean whole through the wood
  • Repeat the steps mentioned above for each of the remaining corners of the square
  • Using the cordless saw, cut through the reference square lines drawn with a pencil
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Using a Router to Cut a Square Hole in Wood

The last method of cutting square holes is by using a router. Compared to a chisel and a drill, using a router is slightly more complicated and requires more experience. If you are new to woodwork you should opt for either of the first two methods.

Using a router has its own advantages. It saves you a lot of time and effort. A router can easily cut through very thick sheets of wood. Just ensure that you are precise while creating a template for the router on the table. This affects how clean the final cutting will be.


  • Follow the template guide and the router bits to create a template
  • For creating a layout for this template use the square dimensions
  • To each line of the template add 0.35 inches (ca. 9 mm)
  • In one of the corners of the square drill a pilot hole. The pilot hole will act as the starting point of your cut
  • Align the router fence using this pilot hole with the square you’d like to cut
  • Turn on the router and allow it to cut along a side of the square
  • Once completed, pause the router and rotate the square. Then continue cutting through another line of the square
  • Repeat the last 3 steps on the remaining square line till you have your hole

Finishing Touches

Once you successfully cut a square hole through the wood, you will notice that the hole is still unfinished. Unless you have experience working with a jigsaw, your cut will require some cleaning to smooth out the jagged edges.

Getting rid of these edges is important if you want to use this piece of wood for woodworking projects. To do this, use a piece of sandpaper. With a low grit sandpaper (around 100 grit), rub your way around the jagged areas of the entire square hole. Repeat this step with higher grit papers till you reach a grit of 320.

In case the lines are too jagged, use an oscillating tool on them before using sandpaper. Needless to say, clean up after your work is done.

Learning basics like cutting square holes in wood are a good way to start your woodwork journey. Once you get the hang of it, you’ll realize how easy and economical it is. You would be on your way to carving your favorite furniture in no time.