Woodstock M1104 - Manual (Page 11)

-9-
M1104, M1105, M1106 Heavy-Duty Bench Grinder
SET
UP
The tool rest supports the workpiece during grinding.
Certain types of grinding may require jigs or accessories
to assure the proper angle of the workpiece against the
wheel.
The eye shield must be installed and positioned between
the grinding wheel and your face during grinding. The
eye shield is NOT a substitute for safety glasses or a
safety face shield. You must wear ANSI approved face
and eye protection.
Using the hardware from the Inventory list on Page
7, assemble the tool rests and eye shields as they are
shown in Figures 6 & 7.
Tool Rest and Eye Shield
Figure 6. Tool rest and eye shield
assembly.
Before installing the included grinding wheels, you must
check them for integrity by performing a “ring test.”
Hang on a string, then lightly tap the rim of the wheel
with a piece of wood such as the handle of a hammer.
The wheel should have a ringing or harmonic type of
sound. If the wheel responds with a dull thud it may
indicate that the wheel has cracks. Do not use a wheel
which is suspected of having cracks, or if there are visu-
al chips, nicks or dents in the wheel surface. This dam-
age can lead to wheel failure, causing the wheel to fly
apart at operating speed.
Always be sure to use a Type 1 wheel that is rated for
operating at 3450 RPM or greater for Models M1104/
M1105, and 1725 RPM or greater for the M1106. Install
the grinding wheel, paper disk, wheel flange, and nut in
the order shown in Figure 7, and then attach the side
cover.
Note: The arbor shaft and nut on the left-hand side of
the grinder is a left-hand thread, so tightening it will
require turning it counterclockwise.
Grinding Wheel
Installation
Figure 7. Grinding wheel installation
order.
NEVER assemble a grinding wheel on
the arbor without paper or fiber discs
between the wheel and the mount-
ing flange. Omitting the discs can put
undue stress on the wheel, causing it
to crack and possibly fly apart.