RIDGID R474 Manual Del Operador página 8

GLOSSARY OF TERMS
Anti-Kickback Pawls (radial arm and table saws)
A device which, when properly installed and maintained,
is designed to stop the workpiece from being kicked back
toward the front of the saw during a ripping operation.
Arbor
The shaft on which a blade or cutting tool is mounted.
Bevel Cut
A cutting operation made with the blade at any angle other
than 90° to the table surface.
Compound Cut
A cross cut made with both a miter and a bevel angle.
Cross Cut
A cutting or shaping operation made across the grain or the
width of the workpiece.
Cutterhead (planers and jointer planers)
A rotating cutterhead with adjustable blades or knives. The
blades or knives remove material from the workpiece.
Dado Cut
A non-through cut which produces a square-sided notch or
trough in the workpiece (requires a special blade).
Featherboard
A device used to help control the workpiece by holding
it securely against the table or fence during any ripping
operation.
FPM or SPM
Feet per minute (or strokes per minute), used in reference
to blade movement.
Freehand
Performing a cut without the workpiece being guided by a
fence, miter gauge, or other aids.
Gum
A sticky, sap-based residue from wood products.
Heel
Alignment of the blade to the fence.
Kerf
The material removed by the blade in a through cut or the
slot produced by the blade in a non-through or partial cut.
Kickback
A hazard that can occur when the blade binds or stalls,
throwing the workpiece back toward operator.
Miter Cut
A cutting operation made with the workpiece at any angle
to the blade other than 90°.
Non-Through Cuts
Any cutting operation where the blade does not extend
completely through the thickness of the workpiece.
Pilot Hole (drill presses)
A small hole drilled in a workpiece that serves as a guide for
drilling large holes accurately.
Push Blocks (for jointer planers)
Device used to feed the workpiece over the jointer planer
cutterhead during any operation. This aid helps keep the
operator's hands well away from the cutterhead.
Push Blocks (for table saws)
Device used to hold the workpiece during cutting opera-
tions. This aid helps keep the operator's hands well away
from the blade.
Push Sticks (for table saws)
Device used to push the workpiece during cutting opera-
tions. A push stick should be used for narrow ripping opera-
tions. The aid helps keep the operator's hands well away
from the blade.
Resaw
A cutting operation to reduce the thickness of the workpiece
to make thinner pieces.
Resin
A sticky, sap-based substance that has hardened.
Revolutions Per Minute (RPM)
The number of turns completed by a spinning object in one
minute.
Ripping or Rip Cut
A cutting operation along the length of the workpiece.
Riving Knife/Spreader/Splitter (table saws)
A metal piece, slightly thinner than the blade, which helps
keep the kerf open and also helps to prevent kickback.
Saw Blade Path
The area over, under, behind, or in front of the blade. As it
applies to the workpiece, that area which will be or has been
cut by the blade.
Set
The distance that the tip of the saw blade tooth is bent (or
set) outward from the face of the blade.
Snipe (planers)
Depression made at either end of a workpiece by cutter
blades when the workpiece is not properly supported.
Taper Cut
A cut where the material being cut has a different width at
the beginning of the cut from the the end.
Through Sawing
Any cutting operation where the blade extends completely
through the thickness of the workpiece.
Throw-Back
The throwing back of a workpiece usually caused by the
workpiece being dropped into the blade or being placed
inadvertently in contact with the blade.
Workpiece or Material
The item on which the operation is being done.
Worktable
Surface where the workpiece rests while performing a
cutting, drilling, planing, or sanding operation.
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