In 1931, the United States began manufacturing acrylic resin
to coat industrial machines and glass binders.
Five years later, this resin was formed into a transparent sheet,
and the acrylic era began.
These acrylic sheets served as a useful bullet-resistant glazing
on fighter planes during World War II,
as it was light,
strong and easily molded onto the skin of the aircraft.
Plexiglass is unrivalled
in its ability to withstand the weather and is unmatched
by any other plastic glazing.
In modern times, plexiglass is used for skylights,
replacement wind screens,
protective blast shielding and
Plywood strengthned with Paint and Epoxy Resin
A sheet of plywood with fibreglass
and epoxy skin is much stronger than plywood by itself,
something used to make wooden boats and aeroplanes stronger.
Painted canvas works much the same way,
the paint (or titebond II a brand of wood glue)
sticks to the wood surface,
and binds the canvas (or any natural fibre fabric) to it.
Then the paint fills the fabric weave and protects it from UV breakdown.
The fabric gives the paint the strength paint doesn't have on its own.