How to Cut Memory Foam

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Cutting memory foam is not difficult, but it does take some skill and prior planning. That is why we have made this comprehensive guide to cutting memory foam so that you can get the job done right the first time. Following these steps will help you cut your foam without making mistakes.

Start with the right tools.

  • First, you need the right tools. Your first task is to choose a good utility knife and straight edge (ruler). We recommend using a sharp utility knife with a heavy duty blade that will last you for many projects. We also recommend using a foam cutting mat for this project as it will protect your surface from getting ruined by any stray cuts or slices, which could happen if you’re not careful!
  • Next, measure out how much memory foam material you need to cut – remember that 1 inch of foam is equal to about 2 inches of standard mattress thickness when fully compressed; however, it’s best to just make sure there’s enough space between these two measurements so that your finished product can be firm enough without being uncomfortable or too hard on your body (which could lead back pains later).

Have a plan.

Have a plan. Before cutting any memory foam, it’s important to have a plan.

  • Make sure the plans are accurate. Make sure that your measurements are right and that your design is exactly what you want it to be. Once the project is complete, there’s nothing worse than having something not fit perfectly or not look how you imagined it would look. The best way to ensure accuracy is by using a ruler and measuring tape when taking measurements and making cuts in foam products like memory foam mattresses or cushions that are being used in home décor projects like sofas & couches.
  • Make sure they’re safe: Safety should be top priority when working with cutting tools such as knives on any type of material because accidents happen quickly even though we take precautions every day! Here at Foam Factory Direct we recommend using hand saws for cutting up large pieces into smaller sections first before using power tools such as circular saws or jigsaws which could cause injury if mishandled properly without proper safety equipment such as goggles; long sleeves shirts; long pants with pockets (for safely storing sharp objects). When using these types of power tools please make sure no children or pets are near by since we don’t want anyone getting hurt by accidently stepping on sharp objects sticking out from underfoot whilst walking across freshly cut sections – keep everyone safe by keeping them away from these areas until everything’s done being worked on!”

Measure twice, cut once.

The old saying “measure twice, cut once” is especially true when it comes to cutting memory foam. You want your finished product to fit perfectly, but if you don’t measure correctly, you might end up with a smaller or larger piece than necessary.

If you’re making something like a cushion or pillow cover, there are two basic types of measurements that need to be taken: firstly, the size of the foam itself; secondly (and more importantly), the size that it needs to be cut so that it fits within whatever it’s going into (e.g., an envelope).

When measuring for overall size and then cutting down from there, make sure both measurements are exact! If one number is too small or large in comparison with another number—say 3 inches instead of 2 inches—then your finished project could be out by half an inch on either side (or even more).

Cut a test piece of foam, if needed.

Before you cut your foam, it’s a good idea to test out the tools. Take a scrap piece of memory foam and try cutting it to see how well the tool you have will work. If you need to make adjustments, now is the time to do so.

  • If you are using an electric knife and find that it is not working well on the foam, try adjusting its power settings.*

Cut the main piece of foam.

With your utility knife, cut through the foam in a straight line. The best way to do this is by making small cuts on either side of where you want your cut to go, then using your straight edge and ruler as guides to connect them together. Use caution when cutting, as it can be dangerous if not done correctly!

Make sure that when you are measuring out the size of the memory foam piece that you measure from one corner down to where it meets another corner—so for example, if I am making a square piece of memory foam (3″ x 3″) I would measure 1″ from each corner and make sure my measurements are exactly equal all around:

  • 2 ½” x 2 ½” = 6 ¾” x 6 ¾” = 13 ¼” wide overall (2½” + 2½” = 5″) plus two inches added onto each side gives us 13¼” wide overall. For example: If I want three inches thick total thickness then I need ½ inch top layer which equals 3/8ths so 4/8ths below or roughly ⅙ths per layer which equals ≈⅓rds thick total thickness or almost two full layers deep which is why we add an extra inch outside just in case any error occurs during measuring because we don’t want any surprises later down stream!

Make sure you have all of your tools and materials ready and that your measurements are correct before cutting your foam to avoid costly mistakes.

Cutting memory foam can be a simple task, but it’s best to make sure you have all of your tools and materials ready before you begin. With the right tools and measurements, cutting can be easy and even fun!

Depending on what kind of project you are working on, there may be different requirements for how much or what type of foam you need. For example: if building an end table or desk chair, one sheet will likely be enough. If making a mattress cover or pillow covers for pillows that have been previously stuffed with memory foam (this is called “re-stuffing”), then two sheets could be necessary depending on what size mattress(es) or pillow(s) need covering.


So there you have it! In this article, we’ve talked about how to cut memory foam using the right tools and techniques, as well as a few of our favorite products on the market today. We hope this information was helpful in getting you started with your project today. Happy cutting!

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