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little cylinders are molded separately.  I believe they are introduced before ball goes in gun. after they come from ordinary hydraulic press.
Balls now are turned on lathe. Seems easy operation altho' done by hand. Ball [[image - drawing showing motion of ball]] held by two concave revolving holder. Tool revolves so as to swing it in curve.  then ball is replaced so as to curve off other sides.  Hyatt says, all efforts to mold true directly have failed and it is cheaper to do this in lathe which involves very little work.  After workman is here he strikes
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every ball in several directions with mallet in order to detect defective ones; then they go to other workman on other lathe who does further turning to very exact size.  Same arrangement on lathe but uses "carbon tool" which I believe is black diamond.
He tries every ball on special instrument of which superior ring A should just let ball pass while ball cannot pass in B.  [[image of double ring instrument]]
Then ball goes to other lathe where A is polished with fine sandpaper.  then is finally finished automatically in special machine having two horizontal discs where balls are introduced and kept
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