User guide

66
BENCH OPERATION R9PLUS Dovetail Jig User Guide
Making The Beam
Chapter 1
A
B
C
A
B
D
B
C
A
E
A
B
C
C
A
B
1-1 The beam assembly consists of the main beam
A
, the
sacrificial backer board
B
and the clamping surface
C
. We
recommend making the clamping surface and sacrificial board
from MDF, 1/2" to 3/4"[12,7 to 19mm] thick. Hardwood or
softwood may also be used.
1-3 Cut a piece of MDF 30" long and 2
1
⁄8" wide [762mm
x 54mm]. This will be your clamping surface
A
. Then cut
your sacrificial boards 1
1
⁄ 2 " x 30"[38mm x 762mm]. You may
want to cut a number of extra sacrificial boards now to use as
replacements
B
.
1-5 This procedure is critical to the accuracy of the jig.
Before attaching the MDF boards to the beam, use each pin plate
as a drill guide. First, mark a line 4
1
⁄2"[114mm] in from the left
end of the top of the beam and square it across
A
. Next, stack
the clamping surface
B
, sacrificial board
C
and beam
D
near
the edge of the workbench and clamp in place
E
.
1-2 Start with a straight, flat and square 30"[762mm] length
of wood, 1
1
⁄2" x 3
1
⁄2" x 30"[38mm x 89mm x 762mm]. Note: A
30" section of common 2 × 4 can be used if it is straight, flat and
square.
1-4 Lay out the mounting screw holes
A
and clamp holes
B
as
per the drawing on pages 38-39. Drill and countersink the screw
holes on the clamping surface. Drill the
5
⁄16"[8mm] holes
C
in
the sacrificial board. This piece can be reversed and flipped four
times to use up all four surfaces.
1-6 Clamp a pin plate with its wide straight side flush to the flat
bench surface
A
and its side edge on the line
B
. Using the 2 small
holes
C
in the pin plate as a drill guide, drill two
3
⁄ 32 "[2,5mm]
pilot holes 1"[25,4mm] deep. These holes will correctly position
the pin plate on the beam. Note: If you are using hardwood, redrill
these holes with a larger bit,
1
/8" or
9
/64", to avoid breaking screws.
Important: Please use these step-by-step instructions in conjunction with the technical drawing in the Appendix, pages 38-39.