PDF Version - The American Watchmakers-Clockmakers Institute
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challenging situations, part 3<br />
the stem pilot<br />
by Dale ladue, CMW21<br />
Figure 9. <strong>The</strong> bushing parted from<br />
the stock.<br />
Figure 10. <strong>The</strong> bushing was mounted<br />
in the lathe, and was broached<br />
slightly to remove burrs. <strong>The</strong> pilot<br />
was tested again for freedom in<br />
the bushing.<br />
Figure 11. <strong>The</strong> bushing’s height<br />
had to be reduced.<br />
Figure 12. A mandrel was turned<br />
out of brass to support the tiny<br />
bushing and the bushing’s height<br />
was reduced approximately one<br />
half.<br />
Figure 13. <strong>The</strong> bushing in place;<br />
notice the pilot wear mark.<br />
Figure 14. With the bushing in<br />
place the stem pilot has been<br />
returned to its original position,<br />
eliminating any contact with the<br />
minute recorder wheel pivot.<br />
Dale LaDue is a second generation watchmaker-clockmaker<br />
who has been a contributing author to HT for many years.<br />
A graduate of the Gem City School of Horology, he has been<br />
in business in the Rochester, NY area for nearly 30 years.<br />
Dale’s work covers the gamut of “challenging situations,”<br />
which are often the topics of his articles. Dale is also the<br />
current president of the New York State <strong>Watchmakers</strong><br />
Association.<br />
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Horological Times December 2010 18