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G0561 7" x 12" Metal-Cutting Bandsaw
The speed at which the saw blade will cut through
a workpiece is controlled by blade type
, feed rate,
and feed pressure
.
Note
: If a lubricant is used on the cut, the feed
rate can be increased by approximately 15%
.
To set the feed rate:
1. Raise the bow to the maximum height to
remove spring tension. Close the ON/OFF
valve to lock the bow in place.
2. Using a
9
⁄16" wrench, adjust the feed pressure
tension sprin
g. Tighten enough to remove
play but not enough to apply tension to the
spring (see Figure 30).
Note: This spring adjustment is an initial set-
ting. Depending on cutting circumstances,
you will have to fine-tune the feed pressure
with this adjustment. Increasing the spring
tension will reduce the feed pressure.
Feed Rate
3. Clamp the workpiece in the table vise.
4. Close the feed ON/OFF valve shown in
Figure 31, to lock the bow and blade a few
inches above the workpiece
.
Figure 30. Spring tension adjustment.
Spring
Adjustment Nut
Figure 31. Feed rate dial.
Feed Rate Dial
ON/OFF Valve
5. With the correct saw blade and blade speed
selected, turn the saw and lubricant p
ump
ON.
6. Open the ON/OFF valve, then slowly rotate
the feed rate dial clockwise to a slow feed
rate until the saw begins to cut the workpiece
(see Figure 31).
7. Observe the chips that exit the cut, and
increase or decrease the feed rate according
to the chip
characteristics.
— If you get a tightly curled, warm shavings,
brown to black in color, you are using too
much downward pressure.
— Blue looking chips are caused by extreme
heat from too high blade speed.
— Thin powder-like chips are from insufficient
feed pressure. This will dull your blade rap
-
idly.
— The best cut and feed rate will give you
evenly shaped spiraled curls with very little
color change, if any at all.