20
drums). However, even a slight offset angle of the
stock will provide for more effective stock removal.
The optimum feeding angle for stock removal is
about 60°. Angling the workpiece for stock
removal provides other advantages, such as less
loading of certain areas of the drums due to glue
lines or mineral streaks in the stock, more even
wear of abrasive strips, potentially faster feed
rates, and lighter loads on the motor.
Note that to get the best final finish, however,
the stock should be fed through the machine so it
will be sanded in line with the grain of the wood
on the final one or two passes.
Cleaning Abrasive Strips.
Regularly clean the
abrasive strips on the drums with commercially
available cleaning sticks, following the manufac-
turer’s directions. Cleaning sticks are available
from your dealer. When cleaning, also brush the
stick crumbs from the drum while it is still
rotating and from the conveyor belt.
Important
:
Wear eye protection, tight-fitting clothes and keep
alert during this operation to avoid injury. Cloth-
backed abrasives can be cleaned by soaking in
paint thinner or mineral spirits for 20 minutes to
1 hour, then using a brush to remove any build-up
or burns. Dry the abrasive strips completely before
reuse. In some cases build-ups resulting from
burns can be removed with Plexiglas held on edge
over a rotating drum. Have dust collection turned
on when cleaning.
Stretching Abrasive Life.
When sanding metal or
solid surface,
MDF
, or particle board, ceramic and
zirconium abrasive tend to last longer than
aluminum oxide and allow a more uniform
finish.
Abrasive life can also be increased by removing
the abrasive wrap from the drum and reversing it.
To do this, remove the wrap and use what was
the trailing end as the starting end on the left
(outboard) side of the drum.
Reversing the wrap will provide a fresh set of
cutting edges on the drum.
Keeping The Machine Clean.
For best results,
make cleaning the machine a regular shop proce-
dure. Allowing excess build-up of dust and debris
can adversely affect performance through the load-
ing of the abrasives, slippage on the conveyor
table, and/or the accumulation of material inside
the drums which can throw off the center of bal-
ance. Leave the dust collector on when cleaning
dust from the drums. Also brush the conveyor belt
after cleaning operations. If not cleaned, the con-
veyor belt could allow stock to slip during sanding
operations.
Fig. 15. Offset stock feeding angle.
Fig. 16. Cleaning abrasive strips.
Summary of Contents for 37x2
Page 36: ...36 SUPERMAX STAND ASSEMBLY...
Page 39: ...39 SUPERMAX DUAL DRUM HEAD ASSEMBLY...
Page 43: ...43 CONVEYOR MOTOR...
Page 45: ...45...
Page 46: ...46 NOTES...