Foredom Master Stone-Setting Kit - Manual (Page 11)

11
The AllSet ® channel-setting guides allow you to cut perfect channels with
precisely the same depth on each side of the channel for level stone
setting. The set includes three adjustable depth channel-setting guides
for all channel-setting applications.
•
The rounded tips of the two basic guides (small and large) make it
easy to cut continuous channels on straight or contoured pieces
(Figure 13).
•
The new double knife-edge guide ensures perfect spacing of
separated stones.
Please Note: The smaller of the two basic channel setting guides
is designed for use with small burs that have tapered shafts below
the bur head. Because the tip area of the small channel guide is less
than the 3/32
″ (2.35mm) bur shank, the guide will not allow burs to
slip or go deeper into the channel. Burs cannot be removed or inserted
from the front of the small guide.
The large channel guide is designed to accommodate larger burs, such
as ball burs, and is especially useful in setting stones with thicker girdles.
Channel-Setting Tips:
Square Stones
For setting stones that will touch, you can cut a continuous channel
(Figure 13):
Step 1: Choose a hart bur with a diameter that will cut a channel to the
proper depth in the material for the diameter of the stones you are using.
Step 2: Select one of the two basic channel guides (small and large ) for
the size bur you are using (see note above).
Step 3: Adjust the distance between the guide tip and cutting edge of
the bur to the desired position of the channel.
Step 4: Cut each channel, making sure to keep the handpiece
perpendicular to the material.
Round Stones (using the knife guide)
For a setting where there will be space between round stones:
Step 1: Choose a hart bur that is slightly smaller than the
diameter of the stone (Figure 14).
Step 2: Scribe deep center marks on top of the channel wall and
use the knife-edge channel setting guide as illustrated (side view).
Step 3: Cut individual seats for each stone by sliding the knife
edge guide from one side to the other in the groove made by the
scribe. When setting the depth of the seat, be sure to allow a little
extra wall height for filing out the scribe marks (file out the scribe
marks before hammering).
Step 4: Set the stones in the channel (Figure 15). File the outside
channel wall at a 30° angle and hammer the top inside edge (not
the outside) to tighten the material over the stones.
Hint:
Be sure to thoroughly clean shavings and metal debris from
out of the setting before putting the stone in place.
Knife
guide Choose a bur
that is slightly
smaller than
your channel
width.
Move the knife guide
along the scribe marks
to create the stone
bearing-cut. Cut one
side at a time and
cut one side deeper
to allow access for
the stone.
Remove just enough of the corner edge to allow the stone to
pass as it is set into the channel. For deep or thick-girdled
stones, the lower corner edge may also be removed (use a
bur or graver to preserve smooth edges on the bearing cut).
Front
view
Cut continuous channels on
straight or contoured pieces.
Set the leading
edge of the stone
into the first bearing
cut and lower the
opposite edge into
the opened
bearing cut.
The stone should
only just touch
the edge. File a 30° angle
into the outside
edge of the
channel.
Hammer the inside
edge of the channel
with a flat punch
or hammer
handpiece.
Secure stones in the
channel temporarily
with red sprue wax
before hammering.
30°
Side
view
Channel-Setting Guides
Figure 14
Figure 15
Figure 13