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problem. Lower the sander at the far end of the work and pull back. Raise
the machine and do the same in a different location. Overheating can be
avoided by using a fairly quick stroke and moving to another area for the
next. A piece of felt about
1
/4" thick can be inserted under the shoe for fast
spot sanding and for working on stubborn areas of paint and varnish.
SPECIAL SANDING PROCEDURES
Ordinarily the sanding stroke is back and forth. Some materials and some
types of operations, however, require a different technique. In rough sanding,
use the machine at an angle. In spot sanding, use the machine with only the
front pulley touching the surface. This is especially required in smoothing
excess glue from wood joints. On metals, slate, marble or plastic materials,
there is no grain to worry about so the sanding may be done in different
directions.
DOORS AND MILL WORK
When sanding doors, cabinet frames, sash, storm windows and screens,
care must be taken to avoid working into the cross grain where one member
meets another. Notice that the right edge of the belt is visible on your
sander and you should watch it closely as work progresses. Work carefully
along the edge where the rail meets the stile. If the joint is slightly uneven,
use a fine abrasive and very light sanding pressure to get it smooth before
making the finishing runs.
For lengthy work on walls or other vertical surfaces, the sander can be
counterbalanced with a length of sash cord, two small pulleys, a light wood
frame and a weight the same as or slightly less than the weight of the sander.
The frame consists of two pieces leaned against the wall with a third piece
nailed across their top ends. The two pulleys are located so the weight on
one end of the cord will be out of the way, but will balance the sander
fastened to the other end. When starting vertical work, angle the sander so
you can see the belt make contact with the material. As the belt touches,
level the machine and make the stroke away and to the left. This movement
will offset any tendency to cut heavily into the work at the start of the stroke.
Fig. 5
899713 - 04-12-02.qxd 9/23/02 1:50 PM Page 10