Foredom Safety Instructions for Using - Manual (Page 2)

The PowerGraver is used for:
• engraving
• bead setting and bright cutting
• channel and hammer setting
• texture and florentine finishing
• carving figures and initials on jewelry
and many other applications where
hand tools such as gravers and beading
tools might normally be used. The
PowerGraver can help the professional
jeweler in these applications by
providing a controlled hammering
action through the handpiece which can
accept a wide variety of tools. The user
controls the hammering action by adjust-
ing the strokes per minute (SPM) with the
speed control and by adjusting the impact
intensity from a very light to a heavy
impact with the adjusting ring on the
handpiece.
The PowerGraver can also be used with
Foredom rotary handpieces for low speed,
high torque applications such as drilling
holes, cutting bearings with a setting bur,
wax carving or other applications where
high speed is not required or desirable.
Motor and Flexible Shaft
The PowerGraver motor (M.PGX) was
specifically developed for this application.
It is a low speed (500–2,800 rpm) high
torque DC motor. It provides smooth
acceleration and holds the preset speed
under load.
The permanently lubricated ball bearings
and heavy duty construction can provide
almost infinite life even in continuous
duty operation. The flexible shaft and
sheath are more flexible than those on
the standard Foredom flexible shaft
power tools because the sheath is made
from a special and more pliable neoprene
material. This provides greater control and
less “drag” on the handpiece.
Handpiece*
The H.9D handpiece (shown below)
converts the rotary motion of the flexible
shaft into a hammering action on the
tool holder. The chuck nut tightens the
collet around the shank (or tang) of
the accessory.
* Note: This handpiece is not intended for
use on standard Foredom flexible shaft
power tools, as it has a maximum speed
of 3,000 RPM.
Handpiece Operation
and Maintenance
Changing Collets –
Four different size collets are provided so
that different size tools can be held in the
chuck:
HP602 1/16 ″ (.0625 ″/1.6mm)
HP603 3/32 ″ (.0937 ″/2.35mm)
HP604 1/8 ″ (.125 ″/3.17mm)
HP605 3mm
An optional 1/32 ″/.8mm collet (HP601) is
also available from Foredom.
To change collets unscrew the chuck nut
using the two wrenches provided-use one
Illustration
No. 1
to hold shaft behind chuck nut and one to
loosen chuck nut. Remove collet in hand-
piece, insert new collet, and screw on
chuck nut.
Always use both wrenches when loosening
or tightening chuck nut to avoid damaging
handpiece.
The HP604 1/8 ″ collet is generally used
with engraving tools with 1/8 ″ shanks.
The HP602 1/16 ″ collet can hold thin,
hardened points with 1/16 ″ shanks for
decorating and stone setting applications.
The HP603 3/32 ″ collet is used with the
hammer or anvil point (A-10177P) and
carbide stylus (A-10215) that have 3/32
″
shanks. These come in the kit. Optional
Pavé diamond point (A-R15G) and bead-
ing tools also work with HP603
3/32
″ collet.
Adjusting the Palm Rest–
The palm rest can be rotated around the
handpiece barrel to the most comfortable
position or removed completely when you
wish to use the handpiece in a “pencil
grip” manner. Just loosen the set screw in
the palm rest and tighten it at the desired
position. The palm rest can also be
moved part way down the handpiece
barrel if required to align your thumb
and index finger with the chuck tool
more comfortably.
The handpiece is designed to be used like
a traditional graver handle or push tool.
Generally, the flat surface of the palm rest
should be positioned at the bottom of the
handpiece in relationship to the cutting
edge of the graving tool. This provides a
flat surface for the fingers and better
clearance over the work area.
Installing and Holding Tools –
Select a collet that has the closest fit with
the tool’s shank. (If too large a collet is
used on a thin tool, the collet jaws or
fingers can be distorted or broken when
Oil Hole
Oil Hole
Set Screw
Wrench Flats
Palm
Rest
Tool Holder
Chuck Nut
Impact Adjusting
Ring
Duplex Spring
Cover
Connector
Aligning Tab
Illustration No. 2
2
Why Professional Jewelers and Engravers use the PowerGraver ®