Foam core is a great material for arts and crafts, picture framing and other fun projects. It is strong, but extremely easy to cut, and it holds its shape well. Trying to cut it with the wrong tool or by going too fast you can easily fray and/or tear the edges. Consider these 3 easy tips for cutting foam core:
Tip 1 - Use a Razor Knife
Foam core is made of 2 layers of Kraft paper sandwiching a core of polystyrene foam of varying thickness. Scissors, then, will not do the trick. It is most effective if you use a razor knife. It provides a comfortable grip and a very sharp and precise cutting surface.
Tip 2 - Trace the Line of the Cut
While this is true for cutting with scissors, it is especially important when cutting foam core. Unless you don’t care what the shape looks like, start by tracing the exact shape of what you are cutting with pencil.
Tip 3 - Score the Line First
After the line is traced, don’t try to cut through the whole piece. Start by scoring the traced line. That is, make a light cut along the line not meant to penetrate the foam core. It allows for a precise cut. With the line scored, make a second and third pass over it to cut through the foam and score the bottom layer of paper from the inside out, thereby completing the cut.
These 3 tips are very useful when cutting foam core. When done right, you will end up with a cleanly-cut piece of material in precisely the shape you want.