Adjusting The Depth Of Cut; Switching On And Off; Planing - GMC 420W Instruction Manual

Adjusting the depth of cut

CAUTION. Always ensure that the tool is switched off
and unplugged from the power supply before making
adjustments or installing or removing blades.
Rotate the depth adjustment knob (3) clockwise for a
deeper cut and anti-clockwise for a shallower cut.
The numbers on the ring under the depth adjustment
knob indicate the depth of cut.
Example, when "1" is next to the
pointer on the front of the planer,
the depth of cut is approximately
1mm. If it is necessary to
accurately determine the depth
of cut, plane a scrap piece of
wood, measure the difference in
thickness and adjust the setting
if necessary.

Switching on and off

CAUTION. Before plugging the
machine into the power socket
always check that the on/off
switch (1) and lock-off button (2)
work properly.
1. Plug in the machine and grip
the tool with your thumb on the
on/off switch (1).
2. Push lock-off button (2) forward
and press in the on/off switch
(1) with the thumb of the hand
gripping the tool. You can
release the finger hold on the
lock off button (2) once the
planer has started.
3. To stop the tool, release the
thumb hold on the on/off button (1).
4. In order to restart the machine, it is necessary to operate
both the lock-off button (2) and the on/off switch (1).
This is an important safety feature that helps prevent
accidental operation of the planer. Only when you release
the thumb hold on the on/off button (1) will the planer stop.

Planing

1. Rest the front base (9) flat on
the workpiece surface without
the blades making any contact
with the workpiece.
2. Switch on the tool and wait for
the blades to reach full speed.
3. Move the tool gently forward,
applying pressure on the front
of the tool, using your hand on
the secondary handle (14) at
the start of planing and
pressure at the rear of the tool,
using your hand on the main
handle (4) towards the end of
the planing stroke.
4. Push the planer beyond the
edge of the workpiece without tilting it downwards.
NOTE. Planing is easier if you incline the workpiece slightly
away from you so that you plane "downhill".
5. The rate of planing and the depth of cut determine the
quality of the finish. For rough cutting, you can increase
the depth of cut, however to achieve a good finish you
will need to reduce the depth of cut and advance the tool
more slowly.
CAUTION. Moving the machine too fast may cause a poor
quality of cut and can damage the blades or the motor.
Moving the machine too slowly may burn or mar the cut.
The proper feed rate will depend on the type of material
being cut and the depth of the cut. Practice first on a scrap
piece of material to gauge the correct feed rate and the
cut dimensions.
CAUTION. Always use two hands to hold the planer.
CAUTION. Where possible, clamp the workpiece to
the bench.
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