Craftsman 17125455 Operating Instructions Manual page 40

3 Adjust thedepth o fcutThe depth o fcutforanOPEN
DOVETAIL JOINT i sequal tothe thickness ofthe mating
partThat i s:
FOR CORNER #1OF THE PROJECT RIGHT S IDE
and FOR CORNER #4OF THE PROJECT LEFT SIDE,
THE DEPTH O F CUT iSEQUALTO THE THICKNESS
OF THE PROJECT FRONT
FOR CORNER #2OF THE PROJECT RIGHT S tDE
and FOR CORNER #3OF THE PROJECT LEFT SIDE,
THE DEPTH O F CUT ISEQUAL TO THE THICKNESS
OF THE PROJECT BACK
Use the depth g auge o nthebase oftheDovelail Jig, a s
described
in a previous section, as a starting point
4 At this point it wil! be necessary for you to make a top
back-up board The reasons for the top back-up board are
to minimize splintering and to provide support for the
template The top back_up board is a scrap piece of wood
having the following dimensions:
LENGTH: 6" to 8", sufficient iength so that it can
clamped by the top clamping bar and be used more
than once;
WIDTH: 2" wider than the width of the project sides;
THICKNESS: 1/8" to 1/4" thicker than the thickness of
the project sides; this to prevent "ACCIDENTALLY"
cutting into the dovetail base
This can also be accomplished by using more than one
,clieee of scrap as long as the resultant length, width and
thickness are as described
5 TO CUT CORNER #1 OF THE PROJECT RIGHT SIDE,
position the top back-up board on top of the base so that it
lines up with the front of the base and abuts to the fight
top stop block as shown in Figure 63
NOTE: BACK-UP BOARDS ARE USED TO MINIMIZE
SPLINTERING OF PROJECT PIECES AND TO KEEP
ROUTER BIT FROM DAMAGING THE DOVETAIL JIG.,
6 Lightly clamp the back-up board in place
7 Position the project side against the front of the base so
that the top surface abuts the right front stop block The
use of a front back-up board at this step is also recom-
mended tt is positioned between the project side and the
clamping bar as shown in Figure 63 The front back-up
board should have the following approximate dimensions
LENGTH: 6" to 8", sufficient length so that it can be
clamped by the front clamping bar and be used more
than once;
WIDTH: 1" to 2" wider than the width of the sides;
THICKNESS: I/4" to 1/2"
THE OUTSIDE OF THE PROJECT SIDE FACES AWAY
FROM THE FRONT OF THE BASE
The words "OUTSIDE SURFACE" marked in (d) in the
Section, GENERAL PREPARATIONS, should have been
visible before the front back-up board was put in place
8 Line up the workpieces so that the end of the project
side and back-up boards line up as shown in Figure 63
9 Securely clamp the project side and the front back-up
board to the front of the base
10 Securefy clamp the top back-up board to the top of the
base,
tl Make sure that the parts remain lined up
12 Assemble the DOVETAILTEMPLATE FOR OPEN
(THROUGH) JOINTS to the Dovetai! Jig so that THE TEM-
PLATE BRACKETS FIT BETWEEN THE WASHERS AND
THE TEMPLATE SUPPORTS as shown Figure 64; it wil!
be necessary to Ioosen the c!amping knobs at the ends of
the base to do this
FIGURE 63
AUXILIARY TEMPLATE \ TOP BACK-UP BOARD\,_
z
FRONT OF THE BASE'
FRONT BACK-UP BOARD //
,
/
"OUTSIDE SURFACE' SHOULD BE VISIBLE ON THIS SURFACE
BEFORE POSITIONING THE FRONT BACK-UP BOARD
PROJECT
RIGHT SIDE OR
PROJECT LEFT
SIDE
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