LIT-181 Page 2 of 4
Square Gravers in Quick
Change holders (FIG. 7), must
be inserted into the jaws from
the back. DO NOT hold tool
by the Quick Change holder in
the jaw.
Hold Curved Traditional
Graver (FIG. 7) as shown.
NOTE: Because of the tool’s
curve, you will need to estimate
the angle needed to set the face
angle.
90 DEGREE SQUARE GRAVER
With the graver’s excess metal
removed — see getting the
graver ready to sharpen (FIG. 8)
— you are ready to make the
face angle (FIG. 9). With the tool
mounted, face angle down, and
the TOOL DIAL locked at 0°,
set the POST DIAL at 45°. This
is just an example, you may
change face angles to t your
needs. If you are using a square
blank graver, start your face
angle by using a 260 grit wheel
on the Power Hone. Finish the
face surface by stepping up to a
600 grit, then a 1200 grit. Once
you have nished the face, you
will only need to take these
steps again if the tip becomes
severely damaged. If you’re not
using a Power Hone, shape the
face as close as possible on a
bench grinder and nish with
this xture and a stone.
A 15° heel will be used for this
example (FIG. 10). Set the
POST DIAL at 15° and lock it.
Rotate the TOOL DIAL halfway
around or 180°, go from the top
0° setting until the bottom 0°
setting is on top. From the new
0°, tool pointing away from
you, turn dial clockwise, until it
reads 45° and lock. Sharpen
on a ceramic wheel, making
the heel about 1/32" long. If
you heel on a 1200 grit wheel,
use the xture and stroke the
graver a couple times without
turning the Power Hone on.
After forming this heel, turn the
dial counterclockwise, going
past the 0° until it reads 45° and
lock in position. Finish the heel
on this side using the same
method. It is important that both
heels are the same size and
symmetrical.
MAKING A 120 DEGREE GRAVER FROM A SQUARE GRAVER
Refer to “SHARPENING A 90° GRAVER”, for details. With the
graver’s excess metal removed (FIG. 11) mount the tool face angle
down in the TOOL DIAL and
lock at 0°. Set the POST DIAL at
45° (or desired face angle) and
grind the face (FIG. 12). Turning
the TOOL DIAL around 180° to
reference 0° and change the
POST DIAL to 2-1/2° (halfway
between 0° and 5°) and lock
in position. From reference 0°,
rotate dial clockwise to 30° and
grind angle (FIG. 13). Make
this angle grind about 1/2" long.
Rotate TOOL DIAL counter
clockwise past reference 0°
to 30°, lock and grind angle
(FIG. 13). Make this side the
same length as the other side
(FIG. 13). TIP: To measure how
much you are grinding off, time
it or count while it’s grinding. It
may be necessary to regrind
the other side to make both
sides equal. But it is important
that the sides are equal and
symmetrical.
Make the heel (FIG. 14) by
changing the POST DIAL to
15° (or desired heel angle).
The TOOL DIAL is already at
30° left, so make this heel and
rotate TOOL DIAL right, past
reference 0° to 30° and make
the other heel. The 120° graver
is complete.
HOW TO MAKE A 110 DEGREE
& 130 DEGREE OUT OF A
SQUARE GRAVER
Basically, making a 110° or 130°
graver is the same as making
a 120° graver, just change the
TOOL DIAL angle for different
side angles.
110° graver (FIG. 13): The side angle POST DIAL is set at 2-1/2°,
but set the TOOL DIAL from reference 0° left 35° and make one
side, then right 35° from reference 0° to make the other side.
130° graver (FIG. 13): The side angle POST DIAL is set at 2-1/2°,
but set the TOOL DIAL from reference 0° left 25° and make one
side, then right 25° from reference 0° to make the other side.
How do you gure this angle setting? The sides of a 90° tool
mounted in a xture, dial set at 0°, are 45° from the wheel. Adding
all angles: 45° + 45° + 90° = 180° (a at plane). Using 180° minus
(desired tool angle) let’s say, 110° = 70°. There are two sides to
the tool, so you divide 70° by 2 which equals 35°, the setting to
make a 110° graver.
Face Angle
FIG. 7
FIG. 8
FIG. 9
FIG. 10
FIG. 11
FIG. 12
FIG. 13
FIG. 14
