It will be seen that the curved
surface of the regulator is sunk so it meets only the vertical edge of
the loop _A''_. For the average workman, polishing the flat parts _m_ is
the most difficult to do, and for this reason we will give entire
details. It is to be expected that the regulator bar will spring a
little in hardening, but if only a little we need pay no attention to
it.
[Illustration: Fig. 44]
[Illustration: Fig. 45]
[Illustration: Fig. 46]
HOW FLAT STEEL POLISHING IS DONE.
Polishing a regulator bar for a large model, such as we are building, is
only a heavy job of flat steel work, a little larger but no more
difficult than to polish a regulator for a sixteen-size watch. We would
ask permission here to say that really nice flat steel work is something
which only a comparatively few workmen can do, and, still, the process
is quite simple and the accessories few and inexpensive. First,
ground-glass slab 6" by 6" by 1/4"; second, flat zinc piece 31/4" by
31/4" by 1/4"; third, a piece of thick sheet brass 3" by 2" by 1/8";
and a bottle of Vienna lime.
Pages:
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98