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Pictured to the left we are turning a
bronze sleeve to replace the worn section of the magnetic chuck
base.
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Pictured to the right the worn portion of the chuck base is
being turned down to accept the above sleeve.
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To the left can be seen the bronze sleeve to be fitted on
the center hub of the magnetic chuck base.
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To the right the sleeve is being inserted
over the previously machined hub. Notice the holes drilled
radially into the circumference of the sleeve where the sleeve
will be screwed to the center hub in addition to gluing. |
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To the left the top bearing portion of
the magnetic chuck is being turned round |
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To the right the bronze sleeve is
turned to fit the I.D. of the top portion of the magnetic chuck.
The bottom surface will also be faced off. |
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To the left the horizontal bearing surface
of the upper magnetic chuck is ready to be blued for scraping.
Notice the Prussian blue on the surface plate. |
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To the right the magnetic chuck is twisted
in a rotary motion on the surface plate to transfer the Prussian
blue to the bottom of the magnet. |
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To the left you can see how the Prussian
blue transfers after many cycles of the scraping. This will then
be used as a master to scrape in the bronze base of the magnetic
chuck. |
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To the right the Prussian blue has
transferred from the top of the magnetic chuck to the base which
will eventually insure proper bearing contact between the two.
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