Deep hole drilling

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Revision as of 13:10, 20 June 2010 by Jontas (Talk | contribs) (Created page with '==Bore drilling== A line or gun drill made by P.O.Ackley. He spun the barrel in barrings and fed the single edged drill in by a hand wheel. This was all pressure fed cutting oil …')

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Bore drilling

A line or gun drill made by P.O.Ackley. He spun the barrel in barrings and fed the single edged drill in by a hand wheel. This was all pressure fed cutting oil witch was forced to the front of a v shaped rod. And out the end new the cutting edge. The swarf and oil came back threw the v.