Grizzly 12" Jointer w/spiral cutterhead manual insert g0609X - Manual (Page 49)

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G0609 12" Parallelogram Jointer
Adjusting/Replacing
Knives
Inspecting Knives
The height of the knives can be inspected with
a straightedge to ensure that they are set evenly
with the outfeed table at their highest point in the
cutterhead rotation.
Tools Needed Qty
Straightedge ...................................................... 1
Hex Wrench 3mm .............................................. 1
To inspect the knives:
1. DISCONNECT JOINTER FROM POWER
SOURCE!
2. Loosen the set screws shown in Figure 10,
Page 17, remove the guard, and open the
pulley cover.
3. Rotate the cutterhead pulley to get access to
one of the cutterhead knives.
4. Using a straightedge, check the height of
each knife at its highest point in relation to
the outfeed table, in each of the straightedge
positions, as shown in
Figure 42.
Setting the knives correctly is crucial to the prop-
er operation of the jointer and is very important
in keeping the knives sharp. If one knife is higher
than the others, it will do the majority of the work,
and thus, dull much faster than the others.
There are two options for setting the knives—the
straightedge method and the knife setting jig
method. Each option has advantages and dis-
advantages and the correct one for you will
become a matter of personal preference. For
best results, the tables must be parallel with each
other (
Checking/Adjusting Table Parallelism
on Page 37) and the outfeed table height must
be properly set ( Setting Outfeed Table Height
on Page 39).
Straightedge Method: A high quality straight-
edge is held flat against the outfeed table and
the knife heights are set to the bottom of the
straightedge, as shown in
Figure 42. Because
the knife projection height from the cutterhead
is dependent on the outfeed table height, the
outfeed table must be set as described in
Setting
Outfeed Table Height on Page 39 for this meth-
od to work correctly.
When using a straightedge to set the knives, you
will not need to move the outfeed table once it is
set and you will always be assured that the knives
are even with the outfeed table in their highest
point of rotation—even if the cutterhead is not
parallel with the outfeed table.
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Figure 42. Checking knife height with a
straightedge.
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— The knives are set correctly when they just
touch the bottom of the straightedge in
each of the straightedge positions.
— If the knives do not touch the straightedge
or they lift it up in any of the positions, then
those knives need to be adjusted.