With a small, sharp craft knife,.

Cutting foam board curves. Use a utility knife and straightedge to cut through thin board in several passes. Cut through the cutting board. You should cut this kind of foam board with the ridges on the bottom.

Lay the blunt side of the knife directly above a part. Curves are harder, and can be messy if you use a saw to cut them. To cut curves, hold the knife perpendicular to the foam and use a short sawing motion.

Cutting curves can be challenging because the foam is more likely to compress. Best way to cut foam board may be you are a designer, architecturer, or in a related field and would like to create some props, mounts, architectural models, or other stuff. Cutting through both thin and thick foam board works best when the cuts are straight lines.

A few comments on my clean curve cuts in my builds. You don’t want to cut your shape and then find. Hot wire foam cutters are the fastest, cleanest and easiest tools to use to cut rigid polystyrene foams, like styrofoam, white beaded eps, and xps foams (blue and.

Whenever you’re cutting foam board, always make sure your blade is going all the way through the whole thickness of the board. Cutting rigid foam with a circular saw when you're insulating a house, you'll need to cut many sheets and the best way for cutting foam insulation board with a. Scoop enough foam to fit comfortably in your hand and hold it between your fingers, so there are at least three fingers exposed.

Using a marker, draw your desired shape onto the thick foam board. As with the long blade utility knife, you’ll want to cut in a smooth motion without sawing to keep your edges clean. For best results, follow these steps for cutting curves and cutouts in thick foam board: