2 - Aligh the Drum Head
is a super simple way to align the Performax drum level to the table
bed. I have found this method to be accurate to .0006". This
method can also be used to equalize the height of the pressure rollers
from side to side.
will need these items:
- 12 Volt battery
(a small 9 volt battery will also work)
- 1 Small 12
volt light bulb
- 3 "Alligator
- 1 Steel 12" ruler (must be flat)
Unplug the sander
and remove the sandpaper wrapping (if installed).
Tape two of
the clips together as shown and attach the light bulb (Figure 3).
Attach the last
alligator clip to one of the posts on the battery and attach the
opposite end to the drum of the sander. (Figure 4)
Attach one of
the free ends of the alligator clips (on the bulb) to the other
post on the battery.
The second clip
from the light bulb is then attached to the end of the ruler. (Figure
Tie Up the
The infeed pressure
roller will conduct electricity and give you inaccurate results.
Therefor, you will need to tie it upwards by wrapping a piece of
masking tape around the roller and attaching the tape to the top-front
of the sanding head housing. (Figure 6)
Raise the drum
head to 2 inches. Place the ruler under the side of the drum that
is closest to the motor. The ruler should be placed so that it is
not touching the infeed table. (Figure 7)
ruler on its edge and place moderate downward pressure upon it.
Slowly lower the drum head until the light bulb turns on. Now, slowly
raise the head until the bulb turns off. Release pressure from the
ruler and the bulbs should turn on again.
Remove the ruler
and place it under the drum head on the left side of the drum (furthest
away from the motor). If the ruler does not easily slide under the
drum head (or if the bulb turns on), turn the cantilever adjustment
knob on the sander clockwise until the bulb goes out.
the adjustment knob does not turn easily (or far enough to
complete the adjustment) you may need to loosen the 4 head
locking bolts on the sander. Don't force the adjusting knob.
If the ruler
slides easily under the drum head, carefully turn the adjusting
knob counterclockwise until the bulb turns on. Be sure to place
adequate pressure downward on the ruler while you are making this
You will need
to re-test the right side of the drum head again because the action
of the cantilever adjustment knob affects both sides of the drum
head. The right most side is least affected but it does move.
Remove the masking
tape from the infeed pressure roller and install the sandpaper.