Table 3-6.--Abrasive Recommendations
FINE FINISH
STOCK REMOVAL
STOCK REMOVAL
WITH FAIR FINISH
KIND OF
STOCK
GRIT
GRIT
GRIT
GRIT
GRIT
GRIT
TYPE
SIZE
TYPE
SIZE
TYPE
SIZE
Wet paper
Cabinet
Paints and
"A" wight
{ 240-400
garnishes
{ 2 1/2- 1 1/2
paper
(silicon
(opencoat
carbide)
garnet)
Metal
Finishing
Metal
Hard tough
working
working
minerals and
PaPer
{ 80-120
(aluminum
cloth
compositions
cloth
{ 150-320
oxide)
(aluminum
(aluminum
oxide)
oxide)
Wet paper
Finishing
Cabinet
Hard brittle
"A" weight
{ 220-320
mineral and
{ 100-180
{ 50-80
Paper
paper
(silicon
(aluminum
(aluminum
carbide)
oxide)
oxide)
Metal
Metal
Metal
Hard metals
working
150-320
working
working
cloth in oil
cloth
or crocus
cloth
{ 80-120
{ 40-60
(aluminum
(aluminum
(aluminum
oxide)
oxide)
oxide)
Wet paper
Cabinet
Metal
Soft metals
"A" weight
working
Paper
{ 80-120 (silicon
(aluminum
cloth
{ 150-320
{ 36-60
carbide)
(aluminum
oxide)
oxide)
Cabinet
Finishing
Hard wood
Cabinet
Hard
paper
PaPer
paper
{ 60-100 (aluminum
(aluminum
{ 120-180
{ 36-50
oxide)
oxide)
oxide)
Wallboards,
etc.
Wet paper
Wet paper
Plastics
Cabinet
"C" wight
"A" wight
{ 240-600
{ 60-100
{ 120-220
paper
(silicon
(silicon
(aluminum
carbide)
carbide)
oxide)
Finishing
Cabinet
Cabinet
Soft wood
{ 3/0-5/0
Soft
{ 1/2-2/0
{ 2-1
Paper
Paper
Paper
(garnet)
(garnet)
(garnet)
wallboard
Redwood and some pines have a marked
HAND SANDING
difference in hardness between the soft and hard
portions of their growth rings. The abrasive on the
Normally, you sand the finished surfaces of
sandpaper removes the softer portion of the grain
cabinet and jointer work with the grain. Sanding
quite rapidly when sanding is done with the grain on
with the grain avoids scratches that might spoil the
this type of wood. The harder grain portions offer
natural appearance of the wood grain.
3-38