Riving Knife - Shop fox W1837 Owner's Manual

Riving.Knife
The spreader also functions as a riving knife, which works
in the same manner as the spreader, but is used for non-
through cuts. It is a metal plate that prevents the newly
cut workpiece from pinching the backside of the blade and
causing kickback.
The key difference between a spreader and a riving knife
is that a riving knife mounts below the blade's highest
point of rotation, as shown in Figure.54.
The height difference between a riving knife and a blade
allows the workpiece to pass over the blade during non-
through cuts (those in which the blade does not cut all
the way through the thickness of the workpiece).
Similar to the spreader, the riving knife acts as a barrier
behind the blade to reduce the risk of hands being pulled
into the blade if kickback occurs.
When used as a riving knife, the spreader/riving knife
must be kept within the range shown in Figure.55. For
that reason, a 10" blade is required for operations that
use a riving knife.
To.install.riving.knife,.do.these.steps:
1.. DISCONNECT SAW FROM POWER!
2. Remove table insert, but leave Phillips head screws
mounted in table throat.
Note: Table insert is held in place by magnet.
3. Raise blade all the way up.
4. Insert upper set of holes on spreader/riving knife
into bracket slot and tighten lock lever to secure
spreader/riving knife (see Figure 56).
5.. Re-install table insert (refer to.Page.71).
6.. Tug upward on top of spreader/riving knife to verify
it is locked.
Model W1837 (For Machines Mfd. Since 1/15)
Minimum 1mm
Maximum 5mm
Figure.54. Example of height difference
between riving knife and blade.
Top Distance
Minimum 3mm
Maximum 8mm
Bottom Distance
Figure.55. Example of allowable top and
bottom distances between riving knife and
Spreader/

Riving Knife

Figure.56. Lock lever used to secure
-38-
Height Difference
Riving
Knife
Riving
Minimum 3mm
Maximum 8mm
Table
blade.
Upper Holes
Bracket
Slot
Lock Lever
spreader.
Knife