How to cut furniture foam at home

Cutting polyurethane foam can be tricky, especially if you're aiming for clean, precise cuts. Whether you're tackling a DIY upholstery project or working on any foam-related task, using the right tools and techniques will make a world of difference. Let’s explore some methods to help you cut foam like a pro.

Prepare your workspace
Before you start, make sure your workspace is tidy and organised. Lay down a protective surface or use a cutting mat to keep your tabletop safe. Gather your tools: a permanent marker, ruler, scissors, craft knife, or a sharp kitchen knife.

Mark your cutting lines
Use a permanent marker and ruler to draw your cutting lines. Take your time—accurate markings are key to ensuring clean cuts and a neater finish.

Scissors for thin foam
If you're working with thin foam, regular scissors or shears will do the job. Choose long-bladed scissors for better control. Follow your marked lines carefully for a smooth, consistent cut.

Craft knife for precision
For more detailed work or thicker foam, a craft knife is your best friend. Fit a new blade into your knife and extend it fully. Start cutting along the lines, taking it slow and cutting in layers, only going a few centimetres deep at a time. This technique helps you maintain control and achieve cleaner edges.

Kitchen knives for thick foam
For thicker foam, a sharp kitchen knife is perfect. A carving knife or serrated bread knife works well, providing the leverage needed for efficient cutting. Apply gentle pressure and saw through the foam, sticking to your marked lines.

Electric knives for efficiency
If you’re dealing with large or dense foam, an electric knife will save you time and effort. An electric carving knife or bread knife will glide through thick materials easily. Secure the foam, then guide the knife along your marked lines. The electric knife’s oscillating motion makes it easier to cut through tough foam.

Safety first
Always cut away from your body, keep your fingers clear of the blade, and wear appropriate protective gear. Cutting foam might seem tricky at first, but with the right tools and a little practice, you’ll get professional results every time.