11
11
FIG. 7
7.B
7.A
OPERATION
(continued)
HANDPIECE OPERATION
Unlike traditional or push engraving
where a fi rm grip and manual forward
force is required, the GRS pneumatic
handpiece requires only a light grip and
guidance.
Relax, allowing the engraving system to
move the tool forward and through the
material with guidance. Most graver slips
are due to manual hand pushing and an
overly‑fi rm grip on the handpiece.
A tight grip actually lessens impact
power.
For heavy work, decrease grip
while increasing power with the foot
throttle; an increasingly relaxed grip will
increase the power. However, do not lose
control while guiding the tool.
For general cutting techniques, position
the handpiece as in FIG. 7.A; this
is similar to holding a dinner knife.
For stippling, hammering, or similar
techniques, position the handpiece as
in FIG. 7.B; this is similar to holding a
pencil.
For hammering work, press the hammer
tip down fi rmly to the material surface
and then operate the foot throttle.
This system is not like a fl exible‑shaft
hammer; do not operate the hammer
tool by holding the tip slightly above
the surface. Use just enough downward
pressure to keep the hammer in place
while working.
