bandsawing
Long, endless band with many small teeth traveling over two or more wheels (one is a driven wheel, and the others are idlers) in one direct…
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Glossary Terms
barrel finishing
Mass finishing process that involves low-pressure abrasion resulting from tumbling workpieces in a barrel (usually of hexagonal or octagona…
bend test
Test for determining relative ductility of metal that is to be formed (usually sheet, strip, plate or wire) and for determining soundness a…
black oxide
Black finish on a metal produced by immersing it in hot oxidizing salts or salt solutions.
blind-hole
Hole or cavity cut in a solid shape that does not connect with other holes or exit through the workpiece.
blocks
Workholding devices used on milling machines. Styles include step, finger-holding, telescoping and quick-clamp.
blue brittleness
Brittleness exhibited by some steels after being heated to a temperature within the range of about 200° C to 370° C, particularly if the st…
bonded abrasive
Abrasive grains mixed with a bonding agent. The mixture is pressed to shape and then fired in a kiln or cured. Forms include wheels, segmen…
Boolean operation
Command that allows the addition, subtraction or intersection of solid objects in CAD.
boring
Enlarging a hole that already has been drilled or cored. Generally, it is an operation of truing the previously drilled hole with a single-…
boring bar
Essentially a cantilever beam that holds one or more cutting tools in position during a boring operation. Can be held stationary and moved …
boring cutter (or boring tool)
Cutting tool mounted in a boring bar (the holder) that enlarges a cored or drilled hole. May be a single-point or multiple-cutting-edge too…