# How to Cut Foam Rubber With an Electric Knife
Foam rubber is the cushiony material found in mattresses, pillows and seat cushions. Sewing centers and craft shops often carry pre-cut pieces of foam rubber in standard sizes for stuffing pillows and reupholstering furniture. If you need a non-standard sized foam for your project, you can cut one yourself, using a serrated kitchen knife.
Things You'll Need
- Ruler
- Cooking spray
- Thin-line marker
Instructions
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1
Measure your project for the exact size the foam piece needs to be. If you are using a thick material or batting to cover the foam for your project, factor the thickness of the batting or material when deciding where to place your cutting lines on the foam.
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2
Lubricate the knife with the cooking spray. According to the book, "Upholstery Techniques Illustrated," lubrication will make it easier for the blade to smoothly cut the foam.
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3
Mark your cutting line on the foam rubber using the ruler and marker. Cut along the marked lines using the electric knife.
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