About EPS Styrofoam
EPS, or Expanded Polystyrene , is commonly known as Thermocol and Styrofoam, is a closed cell
rigid and tough foam. EPS foam is available in various densities and we use a high density EPS
foam for CNC cutting our wing panels.
EPS foam is perfectly suited for hot wire CNC cutting, as it warps minimally and when cut the
material is absorbed in the outer layers of the foam and does not bead, like XPS foam, which is
prone to warping and beading.
EPS foam melts with CA adhesive
, but Epoxy adhesives work great with it. Also, EPS foam can
be strengthening by laminating it . The Hot Wire process renders a layer of ‘foam-dust’ over the
panels. You need to gently sand that out before applying the lamination for best adhesion.
Sanding needed is super light and should be done carefully to avoid changing the airfoil shape
of the wing.
We ship the wing panels in their original wing beds. The wing beds not only provide protection
during shipping, but also should be used as jigs, when laminating and sparring to reduce the
chances of wing warping.
Hinging Technique.
Coro can be hinged easily. Just follow the steps below to create strong, clean and a flexible
hinge joint.
●
Draw a line where the hinge has to be made, on the under side of the surface.
●
Place a metal rule on the line, and adjust slightly so that the straight edge is in between
the flutes and not right over them.
●
Using a sharp knife carefully cut only the upper surface of the Coro. Do NOT cut all the
way through. When cut, you should be able to bend the joint.
●
Now we need
to clear the
hinge joint by
removing the
plastic material
. Bend the joint
all the way
through, and
tape it in place.
Carefully run a
sharp knife on
the edge and
slice of the
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