Lathe Work, Vise Work, Drills and Drilling, Taps and Dies,
Hardening and Tempering, The Making and Use of Tools.
education of the machinist in the science governing the daily
practice of his art has not received its proper share of
attention at the hands of those authors who have written books
upon mechanical subjects: and the artisan is, in consequence,
deprived of the aid derivable from the experience of the
thousands who have trodden the same path before him.
takes years of practice and observation to acquire knowledge
which could be gained in a comparatively short space of time by
the aid of a little book-learning.
converse intelligently with the artisan, it is necessary to
employ language and terms with which he is familiar; and in
cases where calculations are required, they should be of as
simple a nature as possible, because the practical machinist is
not usually versed in algebra; and if he finds that the
information of which he is in pursuit is treated only in formula
whose meanings are a mystery to him, he becomes discouraged and
abandons the task of their elucidation.
When, on the other hand,
the mechanic is encouraged by the easy acquirement of the
desired knowledge, it proves an incentive which leads him to
higher paths of study, into the pursuit of which he had at first
no idea of entering.
workmanship is not a mere matter of accustoming the fingers to
perform mechanical movements; but is governed by a series of
distinct principles, simple and complex, the employment of which
depends at all times upon the perception and judgment of the