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Setting up the work pieces:
1. Before installing the dado blades use a standard blade to
pre-cut the box pieces to have them ready to joint.
2. See Figure 8. After cutting, orient the panels aligning the
wood grain then set up a mock assembly. Pencil mark each
corner with matching letters. For example: A to A, B to B and
so on, for all four corners.
3. Mark the Top (T) and Face (F) of each board. A direction
indicator could also be used.
Figure 8
Set Up the Dado Blades:
1. See Figure 9. Install the Dado set following all safety and
installation instructions from manufacturer and instructions
for the table saw.
2. For this example there are two 1/8" dado blades to produce
a 1/4" box joint.
3. Place a workpiece on the base of the Box Joint Jig and
raise the blades to desired height. This blade height will
determine the height of the box joint. The blade should be a
"fraction" above the board. This should reduce cleanup.
NOTE: If you do not have a table saw and dado blade set this
POWERTEC Box Joint Jig can also be used on a router table.
Figure 9
OPERATION
Install the Sub Fence and Clamp Guard:
1. See Figure 10. With the table saw OFF. Slide Body Assembly
away from blade. Before securing MDF Sub Fence (C) in
place, slide two Flat Head Phillips Screws 1/4"-20 x 5/8" (D)
through the holes of the MDF Sub Fence (C). Loosely thread
two 1/4-20 Hex Nuts (B) onto the 1/4-20 Screws. Slide MDF
with Hex Nuts into the T-slot on the front of the Fence. With
MDF Sub Fence in place tighten the 1/4-20 Screws.
2. Slide a 2-1/2" T-Bolt (J) into the slots on each side of the
base of Body Assembly (A).
3. Place Clamp Guard (L) over the two T-Bolts in the base.
4. Once seated, add an Knurled Knob (K) to each T-Bolt.
Do not tighten at this time.
Figure 10
5. See Figure 11. Take two of the precut workpieces to align
and set Clamp Guard (L). Position the two workpieces
between the MDF Board (C) and Clamp Guard ensuring the
Clamp Guard is square to the fence.
6. Once the boards are in place tighten the two Knurled Knobs (K)
on Clamp Guard (L) to a snug fit—tight enough to hold the
boards in place while allowing boards to move freely side to
side. This allows the user to easily move the boards to the
next cutting position.
7. Lift the boards in and out checking for ease of movement
while positioning in place.
Figure 11
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