MasterForce 241-0805 Operator's Manual page 12

SANDPAPER SELECTION
(PURCHASE SEPARATELY)
Sandpaper can be made from various grit
materials. The grit material and coarseness
of the sandpaper should be selected
according to the type of workpiece.
WORKPIECE MATERIAL
Fine woodwork
Rough woodwork
Manufactured wood products
Solid surfacing material
Metals
Sandpaper is also graded according to
coarseness. Start your work with an
abrasive grit that is just coarse enough
to remove the high spots and excessive
roughness. Follow with a second sanding,
using a grit that is one or two grades
finer. Continue with successively finer
grits until you achieve the desired finish.
Do not switch from a coarse grit to a very
fine grit in one step. It may be difficult to
remove the marks made by the coarse
grit. Use the coarsest grits for the roughing
operation, and finish by using successively
finer grits.
GRIT
Coarse Grit 60–80
Medium Grit 100–140
Fine Grit 150–220
Page 11
OPERATION
Gamet or aluminium oxide
Aluminium zirconia or ceramic
Silicon carbide or aluminium oxide
Silicon carbide or aluminium oxide
Emery or aluminium oxide
Initial sanding on rougher surfaces.
For fast stock removal.
Rough sanding and stripping of painted and rusted
surfaces.
Intermediate sanding.
Removal of minor surface imperfections.
Fine sanding.
Sanding prior to staining, priming, or sealing.
GRIT MATERIAL
PURPOSE