gouging. Keep the sander moving so that yourgrain. This will provide a relatively level and
work will be smooth and even. The stroke issmooth finish. Now insert a fine grit belt for
simply a back-and-forth movement with mostfinal finishing. Always sand with the grain to
of the sanding done on the pull movement.remove scratches left by coarser belts. Keep
Use a light touch. The weight of the belt sanderthe sander moving in long, light strokes during
is the only pressure required. Too much pres-finishing operations. As a final touch,
sure will slow the work by overloading theexperienced sanders will often insert a Oused�
motor and reducing belt speed. The result willfine belt to provide a smooth surface for filling,
be decreased sanding efficiency. Sand slowlysealing, brushing or spraying.
and systematically and, when you stop, lift the
sander from the surface before stopping theREFINISHING COATED WOOD
tool.Your belt sander will also help remove old
paint, varnish or lacquer; however, if the
WOOD FINISHINGcoating consists of several layers, remove as
Take care to select belts wisely. For initialmuch as possible with a paint solvent or
smoothing of rough lumber, use coarse or veryvarnish remover before using the belt sander.
coarse grit and sand with the grain. On veryUse a hand scraper to remove the residue left
uneven or hard wood, sand diagonally (acrossby the solvent and allow surface to dry
the grain). Be careful to avoid gouging. Nowcompletely before sanding.
switch to medium grit belt and sand with the
GUIDE FOR WOOD SANDING OPERATIONSmedium grits as the material shows through
Abrasive Belt Material/Applicationthe coating. When the covering is thin, use
medium grit to avoid scratching the material.
Open-coatRough, fast stockUse short, light strokes, moving the sander
36 to 60 gritremoval, removal of old rapidly. Excessive pressure or steady sanding
finishesin one place will burn the coating and load the
belt.
Open-coatIntermediate finishing
60 to 100 gritMETAL FINISHING
For ferrous metals such as steel, stainless
Open or closed-Fine finishingsteel, iron, etc., use coarse grit open coat belts
coat 120 to 180or coarse to fine grit closed coat belts,
gritdepending on the finish desired. Non-ferrous
Open or closed-Extra-fine finishing, metals such as aluminum, solder, brass,
coat, 200 orespecially with hardbronze, etc., can also be sanded. Beeswax or
finer gritwoodstallow are recommended as lubricants for
metal sanding, polishing or satin finishing to
Remove all sanding dust thoroughly beforeminimize belt loading and to lengthen belt life.
coating. Use a soft brush or a vacuum cleanerTo use, simply rub the lubricant on the belt
from time to time. SAE No. 10 or 20 lubricating
and hose to remove all dust from seams oroil can also be used to assure a smooth
crevices.scratch free surface. Just wipe the oil on the
For fast removal, start with a coarse grit, opensurface prior to sanding.
coat belt. Change to closed coat belts, using
-9- |
ACEC
BOSCH
