- Select a thin, sharp blade for foam up to 4 in (10 cm) thick. Utility knives don’t work very well for relatively thick pieces of foam.
- Hold the knife flat against the top of the foam if you’re cutting through it. ...
- Slice through the foam to complete the cut. Stand beside the foam so you are able to draw the knife down its entire length.
- Align the knife at a 90-degree angle if you’re cutting curves. Hold the blade vertically against the edge of the foam.
- Saw through the foam to finish the cut. Starting at the end of the foam, move the blade back and forth.
What is the best tool for cutting foam?
Cutting styrofoam into any shape you want is easy, but you'll need to choose the right tool for your needs. Method 2 Cutting Styrofoam with Electric Tools Use an electric knife to cut thicker pieces of styrofoam. Use a foam cutting saw to cut through larger pieces. Utilize a …
What is the best way to cut a 2x4?
Jul 14, 2016 · Our upholstery manager, Bernie, shows you how to cut foam with a bread knife! Purchase your foam here: http://www.fabricfarms.com/Upholstery-Foam.html
How to make holes in thick foam?
Mar 06, 2018 · Get the fabric & supplies you need at OnlineFabricStore: https://www.onlinefabricstore.com/Want more info on this project, including written instructions? Fi...
How do you cut high density foam?
Before you cut foam, always make sure your work surface is flat, stable and won't be damaged by cutting through the foam with the knife. If you choose to use a carving knife, use a gentle back-and-forth sawing motion and let the blade work through the sheet. Do not compress the foam and try to make quick cuts through the condensed foam.

What do you cut thick foam with?
0:040:57How to Cut Foam - YouTubeYouTubeStart of suggested clipEnd of suggested clipFoam can easily be cut with a serrated knife or even an electric knife like the kind for cuttingMoreFoam can easily be cut with a serrated knife or even an electric knife like the kind for cutting Turkey. To get a square cut mark the foam on both.
How do you cut thick foam in half?
0:508:00How To Evenly Remove Thickness From A Large Piece Of Cushion FoamYouTubeStart of suggested clipEnd of suggested clipThe challenge is how do you do that how do you remove three inches evenly off of a thick piece ofMoreThe challenge is how do you do that how do you remove three inches evenly off of a thick piece of foam like this so for starters you need a good tool to cut with fortunately. Most of you probably have
How do you cut a 2 inch thick foam board?
0:111:13Tip of the Week: How to Cut Rigid Insulation - YouTubeYouTubeStart of suggested clipEnd of suggested clipFace down with the smooth back up take your measurement take a long utility knife blade extend theMoreFace down with the smooth back up take your measurement take a long utility knife blade extend the blade all the way out. And cut an aggressive angle straight through the product like this.
What tool should I use to cut foam?
While a hot wire knife is generally the only tool that you will need to cut through the foam, when you want to be able to rest the piece of foam that you are working with on the table and still have complete control over it, you will benefit from buying a scroll table.
What is the best way to cut memory foam?
Cut your memory foam mattress with a large, horizontal saw. The most efficient way to cut memory foam mattresses and mattress toppers horizontally is to use a large horizontal saw.
Can you cut foam with scissors?
Use scissors to cut through soft foam. To cut thin or flexible foam, get out a pair of heavy-duty scissors. You can cut curves or straight lines, but you may want to lightly draw your design on the foam with a permanent marker before you begin cutting. Make long smooth cuts so you don't get choppy edges in the foam.
Can you cut foam with a table saw?
You can generally use a utility knife when there are slighter cutting requirements of foam board insulation. If you need several cuts, you can use a circular, jigsaw, or table saw to save time and effort.Mar 5, 2022
How do you cut foam without hot wire?
Use a blade for straight cuts. Bladed implements like knives, box cutters, precision blades (like X-acto knives) or hacksaws are great for cutting through styrofoam, especially if you don't need to make any curved cuts. For a smoother cut, run the blade along an old candle before cutting your styrofoam.
How do you cut a foam board with a hot knife?
0:232:29Cutting Foam With a Hot Knife - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd it has a trigger on it you can has different heat settings. And it has a trigger that you pullMoreAnd it has a trigger on it you can has different heat settings. And it has a trigger that you pull and it heats it up fairly quick.
Can you cut foam with a box cutter?
Many people turn to traditional box cutters, traditional utility knives, and all-purpose knives with longer blades to cut foam. Some people may use a ceramic-blade kitchen knife as a foam cutting knife because the blade is long and the edge is even sharper than new metal blades.
How do you cut foam without making a mess?
Hot Knife. A hot knife is our top choice for cutting Styrofoam. A heated knife is ideal for making small cuts and leaves minimal mess compared to a normal serrated knife. The key is to use a sawing motion when cutting instead of pushing straight down.Sep 3, 2021
Can I use a jigsaw to cut foam?
The S 155/W jigsaw blade is engineered to cut rigid foam and fiberglass insulation, cardboard, foam rubber, and similar materials up to 5 inches. The undulating blade is designed to give fast and clean cuts in materials that are normally processed with a box cutter or knife.
How to cut foam with a knife?
If you choose to use a carving knife, use a gentle back-and-forth sawing motion and let the blade work through the sheet. Do not compress the foam and try to make quick cuts through the condensed foam. A softer foam will compress more easily during cutting. Minimizing pressure during cutting will result in cleaner edges. Medium and firm foams can resist pressure slightly better during cutting, but this is not a reason to apply extra force. The less the foam is compressed during cutting, the more control the user has over making straight cuts and flush edges.
Can you ruin a cushion with a single mistake?
This strategy may reduce the number of cuts you have to make, but a single mistake can ruin both cushions, while leaving buffer room around each can make a mistake salvageable. With the edge of the foam facing you serving as the cushion's rear edge, begin to mark the cushion's dimensions using a straight edge, as seen to the right.
Is polyurethane foam a versatile material?
There is no denying foam is a versatile material with tons of applications. If you are working with polyurethane foam for the first time in creating a custom project, you may need a little help. There are a few things to know about how to cut polyurethane foam.
Can you compress foam?
Do not compress the foam and try to make quick cuts through the condensed foam. A softer foam will compress more easily during cutting. Minimizing pressure during cutting will result in cleaner edges. Medium and firm foams can resist pressure slightly better during cutting, but this is not a reason to apply extra force.
Can you cut foam with an electric knife?
The picture to the right illustrates the ease with which a sharp blade can cut the foam without compressing it. If you use an electric knife, do not force the blade through the foam. The slower you pass the knife through the foam, the more control you maintain. A good way to think of it is to cut the foam like it's freshly-baked bread.
Can you use foam for cutting?
Medium and firm foams can resist pressure slightly better during cutting, but this is not a reason to apply extra force. The less the foam is compressed during cutting, the more control the user has over making straight cuts and flush edges.
Can you use foam sheets as edge for cushion?
For square or rectangular cushions, this means you can have a cushion with two sides already squarely machine-cut. Do not plot out cushions to share a cutting edge.
By Rain Noe - November 10, 2010
One of the things I neglected to mention in my banquette-building post was how to cut the foam. Having no money, I cut through five-inch-thick foam sections by making repeated swipes with a cheapie utility knife like the one above. It was time-consuming, messy, far from accurate, and doing the curves was a real pain. It's the dumb way to cut foam.
Rain Noe
I’m a lapsed industrial designer. I was born in NYC and figured I’d die there, but a few years ago I abandoned New York to live on a farm in the countryside with my wife. We have six dogs.
How to cut foam?
1. Select a utility knife to cut foam up to 1 in (2.5 cm) thick. Utility knives work well for foam since they’re relatively inexpensive and easy to use. Take advantage of them for a safe way to cut thinner pieces of foam that don’t really require better tools. Pick the sharpest knife you have available.
How to cut foam with a knife?
Hold the blade over the foam and parallel to cutting guidelines. Position the blade above the foam and over the spot you wish to cut. Keep the blade level with the foam. In order to maintain control over the knife while you work, stand behind or beside the foam.
What is rubber foam?
Learn more... Rubber foam is a strong, spongy material often used in mattresses and other items that need to be durable. Because of its unique consistency, it can be challenging to cut. Always outline planned cuts first, then choose a cutter according to the thickness of the foam.
What to do if foam hangs off?
If part of the foam hangs off, it could stretch out and affect the cut. If you’re working over something you don’t wish to damage, such as a table in your home, cover it first. To protect your work surface, slide a piece of scrap plywood underneath the foam.
What knife to use for cutting foam?
Since cutting foam is a lot like cutting bread, many people go with a nice serrated bread knife. Carving knives also tend to work well. Rubber foam has a similar consistency to bread, so your best bet is to pick a serrated blade that is easy to control. It has to be sharp in order to cut smoothly through the foam.
Can you cut foam if it's too big?
When cutting foam, err on the side of caution. You can always go back and trim foam if it’s too big, but you can’t do anything with a piece cut too small.
How to cut foam with electric knife?
Guide the knife along the line you drew on the foam. Turn on your electric carving knife and slowly follow along the marker line. Keep your knife perpendicular to the foam so your cut isn’t crooked. Avoid pushing down on the foam while you’re cutting since it could deform and make your cut inaccurate.
How to cut foam with a marker?
4. Draw your cut lines on the foam with a marker. Set a straightedge on top of the memory foam so it crosses the marks you made for your measurements. Use a permanent marker to draw your lines between the measurements so you know where to make your cuts. Make the lines thin so your cuts and measurements are precise.
How to remove a memory foam mattress?
1. Remove the slipcover if you’re cutting a memory foam mattress. Many new memory foam mattresses have a slipcover on top for an additional layer of protection. Look for a zipper around the edge of the mattress and unzip it as far as you can.
How to measure memory foam?
Mark the memory foam with a permanent marker and a tape measure. Hold the end of your tape measure at the edge of your piece of memory foam and pull it out until you reach the correct length. Draw a dot on the memory foam with a permanent marker at the end of your measurement.
What is memory foam used for?
Learn more... Memory foam is a common material used for mattresses and pillows since it’s comfortable and it conforms to your body. If you have a piece of memory foam that’s too large, you can easily cut it at home with an electric carving knife.
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What tool to use to cut foam?
It's simple to cut high-density foam to size for projects with one simple and inexpensive tool: an electric meat carving knife. Advertisement.
How to cut foam for a sanding machine?
Cut the foam. Turn on the electric knife to the high setting, and with the blades turned away from you, begin cutting through the edge of the foam along the marks that you made in Step 2. If you're cutting a difficult pattern, circular pattern or more than just a few straight lines, it may be helpful to make a rough cut a few inches away from the edge of the markings, discard the excess foam and then begin careful cutting along the edge of the pattern you marked.
What to do if knife is not giving a smooth cut?
If the knife is not giving a smooth, clean cut, stop working and sharpen the blades before proceeding. Always move the blades away from you, not toward your body, to avoid injury.
How to connect a series of marks together?
When you have a series of marks, use a level or straight edge to connect them together, making sure any straight lines are actually straight. If you're tracing a pattern onto the foam, carefully pin the pattern to the foam and trace around the edges, being careful to follow the edge of the pattern closely without moving it.
Who is Carlye Jones?
ABOUT THE AUTHOR. Carlye Jones. Carlye Jones is a journalist, writer, photographer, novelist and artisan je weler with more than 20 years of experience. She enjoys sharing her expertise on home improvements, photography, crafting, business and travel. Her work has appeared both in print and on numerous websites.
