closed loop of coated abrasive cloth, paper or film that ranges in size
from a tiny 1/4" wide all the way up to 60" wide and of any length
needed to fit on a sander. Also is referred to as a
Rough sanding of glued-up wood panels to remove wood and even out the surface to prepare it for intermediate sanding.
Zirconia mineral is a mixture of zirconium oxide dissolved in aluminum
oxide at molten temperatures. Coated abrasives use a micro-crystalline
structure form of this mineral that is characterized as sharp, hard an
extremely tough. Because of the structure and extreme toughness, smaller
particles of grain break off in use and at a much slower rate than
standard aluminum oxide. It produces superior performance on a wide
variety of materials of both high and low tensile strength under
Typical applications include grinding of carbon steel, stainless steel,
tough bronzes, exotic alloys, cast iron, aluminum and titanium.
~ Often dyed blue or green to differentiate it from other minerals.
special treatment added to coated abrasives for woodworking which
reduce static electricity buildup and allows efficient dust collection.
This facilitates dust-free workpieces, cleaner machines and longer belt
Cloth is the most popular backing for abrasive sanding belts.
J weight cloth (jeans) is a lighter weight cotton material used for
polishing and finishing operations or where flexible products are
~ X weight cloth (drills) is a heavier, stronger and
less flexible cotton or cotton/poly blend material that is used in
standard/medium duty sanding operations.
~ Y weight (satin) is an extra heavy polyester backing for heavy duty grinding.
backing used on coated abrasives that is the result of laminating E
weight paper and light cloth. Primarily used on discs or sheets used in
emery is a regular aluminum oxide containing a small amount of ferric
oxide. This addition was to give high durability, but with improvements
in the manufacture of aluminum oxide rolls and sheets, emery cloth is
not as popular today as it once was.
~ Traditionally, Emery was recommended for hand polishing on ferrous and nonferrous metals.
Fiber backings consist of multiple bonded layers of resin impregnated paper. They are tough and strong for use on resin fiber discs.
Glazed Abrasive Belt
on a sanding belt is when the abrasive grain is dulled after excessive
heat buildup causes metal particles to "weld" themselves to the tips of
the grain when sanding ferrous metals. It is identified by a smooth,
glossy surface on the face of the belt. Glazing then creates even more
heat and your rate of cut decreases as there is now only minimal grain
breakdown. Potential remedies include using a more flexible abrasive
belt, incorporating a harder or more aggressive contact wheel, reducing
the belt speed and using a lubricant or coolant.
weight papers are used for backings on sandpaper sheets, rolls, discs
and some sanding belts. A, B, C, D, E and F are the common weights used,
with A & B being the lightest and most flexible (typically used on
sheets), C & D weights are stronger and less flexible so are
typically used on discs and E & F weights are the strongest paper
backing and typically used for discs and belts where high resistance to
tearing is required.
of the spaces between abrasive grains on a coated abrasive with the
product you are grinding (i.e. soft woods or metals). This results in a
decrease in stock removal and rate of cut. Potential remedies include
using an open coat abrasive where the grains are spaced farther apart to
allow material particles room to fall back out, selecting an abrasive
with a lubricant or stearate additive or top coat, adding a lubricant
to your sanding process, incorporating a less aggressive contact wheel or increasing your sander speed.
abrasive mineral that is produced in electric furnaces to achieve a
high degree of hardness and it's glossy black color. Due to it's brittle
characteristics, it fractures into sharp sliver-like wedges having
cutting edges that permit rapid stock removal.
Recommended for finishing nonferrous metals such as brass, bronze,
copper and aluminum as well as other materials such as leather, glass,
rubber and plastic. Also used to finish sand on wood and in general on
paint, lacquers and sealers.