"Sandblasted Signage". There are many different ways to use
a sandblaster to make a relief by blasting away in areas and
leaving others level to a finished surface. The sand used in
the blaster varies in type and pressure for differing
materials. Materials such as Redwood, Cedar, High Density
Urethane, Plastics and even several types of Stone.
When I first
learned this technique I worked for Parkway Signs who showed
me the latest way to make a wood sign (the trend began in
the 80s). For many years before the Howe family at Parkway
Signs specialized in routed and engraved signs. They made
many of the park service signs in northern Illinois and
southern Wisconsin. I was told they were the first in the
area to adopt the sandblasted technique being as the were
geared toward joined panel wooden signs.
In the old days when we made them everything was all by hand
including hand cut rubber masking. These days I make most of
them using the computer to dye cut the rubber mask. After
the process of creating the relieved surface the sign is
primed with oil based primers and then painted and or
stained with durability in mind. A well maintained
sandblasted sign can last indefinitely.