Dow Styrofoam blue modelling foam
Dow Styrofoam extruded polystyrene (XPS) blue foam has been used with great success as a modelling foam for many years. Strong, lightweight and versatile -Styrofoam XPS has been used for everything from competition grade surfboards to remote control vehicles, outdoor water features to model railway dioramas, architectural models and even triathlon racing bike frames.
Styrofoam XPS boards are lightweight with a high compressive strength rating. The unique closed cell structure/cell shape of Styrofoam XPS results in no voids between cells, the result of an exclusive extrusion process that assures uniform, predictable, stable physical properties.
Styrofoam XPS is a thermoplastic and retreats from fire. It also contains a flame retardant additive to inhibit accidental ignition from small fire sources eg., over-heated wires or welding sparks. The cell structure of Dow Styrofoam XPS enables it to resits all forms of water and moisture penetration.
Styrofoam XPS is chemically and physiologically inert, it creates no dust and will not support mould or mildew and is non allergenic. Styrofoam is not a known food source to vermin or insects.
Cutting and Shaping
Due to the homogeneous cell structure and uniform density of Styrofoam XPS it can be cut accurately and to very close tolerances. Styrofoam is easy to cut and shape with a range of tools including a hotwire cutter, serrated knife, hacksaw, floral knife or X-Acto knife. To cut a thick piece, or several sheets stacked together, try using an old electric knife. DCT can cut your board to your required thickness and/or length from $10 per board. Note that DCTech cannot cut your board into shapes.
Styrofoam XPS can be painted with an acrylic craft and/or water based paint. Avoid using solvent based paints as these may damage the foam. Some spray paints are safe to use - read the label carefully to determine whether or not it is foam approved.
For a fast, sure bond, use a low-temperature glue gun (using a non-solvent base such as an epoxy resin and/or polyurethane adhesive) which can be purchased from your local hardware store.