Frame Mortise & Tenon Jig User Guide
33
Chapter 5
MULTIPLE JOINTS
5-11 Extend the sight and unclamp. Sight the left of the other
pair of mortise positions
➀
and re-clamp. To avoid re-sighting each
board, mark the left hand outrigger or set a stop at the workpiece
end
➁
. Rout the mortise, then move the table and rout the right
hand mortise. The table limit stops and outrigger marks (or stops)
are now set for successive workpiece mortising.
■
2
1
5-12 Note: The maximum dimensions for twin joints are:
➀ ➁
Tenon workpiece: 3" x 3
1
⁄8"
+
[76x79
+
mm]
➂ ➃
Tenon size:
1
⁄2" x 2
1
⁄2"
+
[12x65
+
mm]
➄
Min. spacing:
9
⁄16"[13mm]
➅
Max. distance from board edge to center of tenon: 2
3
⁄8" [60,3mm]
16
4
2
3
5
5-13 Mark the two tenon centers taking care to allow space
between the two joints
➀
at least slightly greater than the tenon
bit diameter
➁
.
1
2
Twin Joints
5-9 Extend the sight. Position and clamp the mortise piece so the
right hand mortise of the first pair is centered under the sight
➀
.
Either mark an outrigger or set a stop block for successive mor-
tise pieces
➁
. Rout the right hand mortise. Note: Outriggers are
referenced in Step 3-19.
1
2
5-10 Move the table left and lock. Rout the left hand mortise.
Leave the table to left.