QONE White 3D Foam Block DIY Wallpaper, CUSHIONI Foam Brick, Natural Brick Shape Design of Sticker Type

Benefits of Foam Material
Most foam materials can often be cut and shaped manually using inexpensive hand tools or hot-wire cutter into a very realistic looking foam component of model airplanes.

Bulky foam blocks (i.e. such as that of white polystyrene foam) are suitable for building large-scale model airplanes and their components (e.g. foam-core wings, fuselages etc.) economically.
Foam sheet material of different thicknesses (e.g. 1 mm, 2 mm, 3 mm or 5 mm thick Depron foam sheet) are suitable for building composite components such as the foam-veneered wings (e.g. wings of balsa rib construction with foam sheet as the skins) of model airplanes.
Coloured foams (i.e. in colours of white, pink, gray, blue, red etc.) provide colourful appearance to model airplanes without the need of painting.
Foam material is normally safe from being in contact with standard glow engine fuels, although it will reacts almost instantaneously with raw gasoline.
As most of the foam materials suitable for building model airplanes are widely available in the market, there are a lot of information and resources available online for novices who wish to educate themselves first before getting into using different types of foam materials for own model building projects.
Foam material is very consistent and each sheet or block is almost indistinguishable to every other piece.
Therefore, you don’t have to worry about material selection or to spend hours at the hobby stores looking for suitable matching/identical pieces for your model airplane building project.
It is easy to work with mainly as a result of its physical characteristics.
Hence the use of suitable foam materials make possible for the speed and accuracy of model airplane construction, even if it is for building the components of irregular shape such as the airfoils.