Resources

Glossary


A B C D E F G H I J L M N O P Q R S T U V W Y Z
Deadhead

See Noseblock.

Deburring

Act of removing burrs from metal.

DeLappe Discs

Coated abrasive discs which have radially-cut slits emanating from the center hole or around the disc periphery. Used primarily in the woodworking industry on felt spools for sanding contoured surfaces and as a flutter sander for machine sanding grooves and routed areas.

Density

The mass of a given substance per unit volume, usually expressed in weight/pounds per cubic inch, etc.

Depth of Cut

Refers to the amount of stock removal during each pass of a sanding or grinding operation. Usually expressed in thousandths of an inch.

Dimensions

The size of a workpiece or coated abrasive product. Normally expressed in measurement of length, width and often depth, i.e., 4? x 8? plywood sheet, 4? x 132? belt, etc.

Directional Arrow

Printed on the back of coated abrasive belts, directional arrows point the direction the belt should be run on the machine. Belts manufactured with butt-type splices may be run in either direction and the arrow will point in both directions. Flap wheels also carry directional arrows signifying proper direction of rotation.

Disc

A round, flat coated abrasive product with or without a center clamping hole that is affixed to a rotating plate or back-up pad for portable or stationary grinding. Discs with other-than-round outer peripheries are also manufactured for special applications.

Dressing Tool (Dresser)

Any tool or apparatus used for dressing something.

Drum Cover

Refers to the coated abrasive wrapped on the drums of a multiple drum sanding machine.

Dry Grinding

Refers to any coated abrasive grinding operation that does not employ a coolant or lubricant in the grinding process.

Dubbing

Rounding or tapering the edges of workpieces. May or may not be intentional or desirable

Ductile

Capable of being readily pressed or drawn or otherwise formed into various shapes without fracturing.

Dulling

The wearing away of the cutting edges of abrasive grains through use. It occurs to some degree during any abrasive operation and will finally result in inefficient cutting or abrading, at which time the coated abrasive should be discarded or shifted to lighter work, regardless of its appearance.

Durometer

An instrument used to measure hardness of rubber and other elastomeric materials.

Durometer Hardness

The hardness of a material as measured by a durometer.

Dressing

Restoring the working face of a contact wheel or platen to its original configuration.

Drawing Die Polisher

A unique machine that employs narrow coated abrasive belts to polish drawing dies. The die rotates horizontally on a revolving table. The coated abrasive belt is operated in a vertical plane against the inside diameter of the die. Abrasive belts range from 1/2? in width to as narrow as 1/8?.

Disc Back-Up Pad

A support pad designed to back-up coated abrasive disc during grinding.

Disc Grinder

A machine on which abrasive discs are used for grinding.

Disc Nut

Used to secure disc to back-up pad.

Discoloration

See Burning the Work.

Dog Ear

A protrusion, usually on one edge of a coated abrasive belt at the joint caused by uneven belt cutting or improper joint alignment at belt pressing.

DOM Tubing

Drawn Over Mandrel. Tubing that is expanded by forcing the tubing over a mandrel.

Double Flex

A controlled breaking of the adhesive bond of a coated abrasive product at two 45 degree angles to the length.

Down Grade

The diminishing of the value of lumber by creating defects during processing. This commonly occurs during rotary knife planing when tearouts, knot loss and splitting occur.

Drawer Sander

A special machine for sanding the dovetails, front and rear, of wooden drawers after assembly.

VSM Abrasives Co.
Representative Access