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12
Checking Drum Alignment
The sanding drum comes preset from the
factory. If a problem with the drum alignment
occurs, follow the instructions listed below.
1. Lift the knob (Figure 6, Item A) to open the
dust cover and remove the abrasive strip. If
you are unsure how to do this, see the
“Wrapping Abrasive Strips” section in this
manual.
2. Using a metal straight edge, or ruler, as a
thickness gauge (Figure 6, Item B), insert
the gauge between the drum and the
conveyor bed on the outer end of the drum.
3. Open the dust cover and lower the sanding
drum while slowly rotating the drum by hand
until the drum lightly contacts the thickness
gauge.
4. Remove the thickness gauge and place it
under the drum at the opposite end. If the
drum does not contact the thickness gauge
to the same degree as the other end of the
drum, alignment is necessary.
Aligning the Drum
1. Loosen the two hex cap bolts (Figure 7, Item
C).
2. Lay the thickness gauge under the drum
lengthwise.
3. Adjust the knob, (Figure 7, Item D) until the
drum contacts the gauge equally along its
entire surface. Turn the adjusting knob
clockwise to lower the outboard end of the
drum, and counterclockwise to raise the
outboard end of the drum.
4. When the drum is parallel to the conveyor,
tighten the two hex cap bolts.
Fine Tuning Drum Alignment
When sanding boards wider than the drum,
drum alignment is critical and must be adjusted
slightly higher on the outboard end. This will
prevent any ridges from developing in the stock.
Always check it on a piece of scrap wood, as
follows, before sanding the work piece.
Run a piece of scrap wood approximately 6”
wide by 16” to 18“ long through the sander
sideways so that the end of the board extends
past the end of the drum.
Turn the board 180 degrees and sand the same
side without changing the sanding height.
If a ridge is visible where the drum overlaps,
loosen the two hex cap bolts (Figure 7, Item C)
and turn the adjusting knob (Figure 7, Item D)
slightly. Turn the adjusting knob clockwise to
lower the outboard end of the drum and
counterclockwise to raise it. Tighten the two hex
cap bolts. Repeat this process until the ridge is
gone and the entire board is sanded.
Figure 6
A
B
Figure 7
C
D