How to Cut Foam Board

by wpx_admin
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Everything you need to know about cutting foam board can be found here! Learn what tools to use and the different techniques for getting professional looking cuts.

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Foam board is a versatile material that can be used for a variety of projects. It is lightweight and easy to cut, making it a good choice for school projects, model building, and signs. Foam board can be cut with a utility knife or scissors, but for a cleaner cut, use a razor blade or hot wire cutter.

Materials Needed

-Ruler or a straight edge
-Pencil or pen
-Foam board
-Utility knife with sharp blade
-Cutting mat

With these simple materials, you should be able to make clean, precise cuts in your foam board.

Step One: Measure and Mark the Foam Board

Measure and mark the foam board according to the dimensions of your project. A steel straightedge or a long level can be used to draw a line on the foam board. Use a pencil to lightly score the line onto the surface of the foam board.

Step Two: Set Up the Cutting Blade
For best results, use a sharp utility knife blade or a sharp craft knife blade. If using a utility knife, insert a new blade into the handle. If using a craft knife, snap off the dull end of the blade to expose a fresh, sharp cutting edge.

Step Three: Cut Along the Scored Line
Position the blade on the foam board so that it is just barely touching the scored line. Apply pressure to the handle of the knife and cut along the line. If necessary, make several passes with light pressure to cut all the way through the foam board.

Step Two: Cut Along the Marked Lines

After you have drawn your lines on the foam board, it is time to start cutting. You will want to use a sharp knife or box cutter for this step. For best results, make sure that you are cutting along the marked lines as closely as possible.

If you are using a knife, you may find it helpful to score the line first before cutting all the way through. You can do this by running the knife along the line several times until you have made a shallow cut. Once you have scored the line, simply apply more pressure and run the knife along it again until you have cut all the way through.

If you are using a box cutter, you will want to apply pressure and run it along the marked line in one continuous motion. Be careful not to apply too much pressure, as this can cause the blade to slip and result in an uneven cut.

Step Three: Smooth the Edges

If you want to create a professional-looking project, it’s important to take the time to smooth the edges of your foam board. This can be done with a variety of tools, but a sharp utility knife or box cutter works well.

Start by cutting along the outside edge of your template. Then, use a straight edge to score the foam board along the line you just cut. Finally, use your knife or box cutter to slowly and carefully remove any rough edges.


Assuming you now have a good understanding of the different types of foam board and their benefits, it’s time to get into how to cut foam board. Just like with any other material, there are certain tools and techniques that work best for cutting foam board.

In general, the best way to cut foam board is with a sharp utility knife. You can use a regular blade or a specialty blade designed for cutting foam board. If you opt for a regular blade, just be sure to keep it extra sharp so it doesn’t tear the foam.

Another option for cutting foam board is with a hot wire cutter. This tool uses heat to melt through the foam, so it’s important to be very careful when using it. Hot wire cutters can be tricky to use, so they’re not recommended for beginners.

If you need to make very precise cuts, you can also use a CNC router. CNC routers are computer-controlled machines that can make very intricate cuts in a variety of materials, including foam board. However, they can be expensive and require some experience to operate.

Once you have the right tools, cutting foam board is relatively simple. Just follow these steps:

1.Mark your cut lines on the surface of the foam board with a pen or pencil. Use a straight edge to draw straight lines if needed.
2.Set your blade at the desired depth and make your first cut. Begin slowly and increase speed as needed. Make sure to keep your blade perpendicular to the surface of the foam board so you get clean cuts.
3.Cut along your marked line until you reach the end. If you’re using a hot wire cutter, carefully remove any melted pieces of foam before moving on to your next cut


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