h7583 tenoning Jig
-17-
figure 19. Mortise and tenon cutting lines.
— select joint locations that are free from
knots and grain twists that could break
when stressed.
— tenons need structural and cosmetic shoul-
ders to strengthen the joint and hide gaps
that may occur as the wood shrinks with
age.
— When the thickness of the mortise and
tenon stock are the same, make the tenon
the same thickness as the mortise walls.
— When jointing stock where the mortise
piece is thicker than the tenon piece, make
the tenon as thick as possible without mak-
ing the mortise walls too thin.
— Make sure there is a slight space between
the bottom of the tenon and the bottom of
the mortise for glue squeeze out. if you use
a mortise chisel and bit to make the mor-
tise, generally the indents from the bit tip at
the bottom of the mortise are sufficient.
3. plane a piece of wood approximately
3
⁄
8
" thick
to match the base plate of the jig, then clamp
it to the front of the table and even with the
right side of the jig base plate, as shown in
figure 20.
Note:
This additional base piece provides a
level surface with the jig base plate to set the
workpiece on when clamping it to the jig in
later steps. This configuration also reduces
the risk of the workpiece bottom binding with
the table as it slides through the blade during
a cut.
aLWayS make sure the table saw is turned
OFF
, disconnected from power, and all
moving parts have come to a complete
stop before making adjustments to the jig,
workpiece, or table saw to avoid serious
personal injury from making contact with
the spinning blade.
figure 20. Example of additional base piece
clamped to the saw table.
Additional Base piece
