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embodied in the present edition. “Old style” numerals, in continuous use since the first edition, and occasionally a source of confusion for readers, have been replaced by a modern
numeral style. The entire text of this edition, including all the tables and equations, has
been reset, and a great many of the numerous figures have been redrawn. The addition of
80 pages brings the total length of the book to 2640 pages.
The 26th edition of the Handbook contains significant format changes and major revisions of existing content, as well as new material on a variety of topics including: aerodynamic lubrication, high speed machining, grinding feeds and speeds, machining
econometrics, metalworking fluids, ISO surface texture, pipe welding, geometric dimensioning and tolerancing, gearing, and EDM.
Other subjects in the Handbook that are new or have been revised, expanded, or updated
are: graphic descriptions of functions of angles, imaginary and complex numbers, complex coordinate systems, contour milling, weight of piles, Ohm’s law, binary multiples,
force on inclined planes, and measurement over pins.
Those users involved in aspects of machining and grinding will be interested in the new
topics MACHINING ECONOMETRICS and GRINDING FEEDS AND SPEEDS, presented in the Machining section. The core of all manufacturing methods start with the cutting edge and the metal removal process, and improving the control of the machining
process is a major component in order to achieve a Lean chain of manufacturing events.
These sections describe the means that are necessary to get metal cutting processes under
control and how to properly evaluate the decision making.
A major goal of the editors is to make the Handbook easier to use. The 26th edition of the
Handbook continues to incorporate the time-saving thumb tabs, much requested by users
in the past. The table of contents pages beginning each major section, first introduced for
the 25th edition, have proven very useful to readers. Consequently, the number of contents
pages has been increased to several pages each for many of the larger sections, more thor- PREFACE
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- Fall '09