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Letters

Anonymous

American Machinist

06-01-2000

Letter

Byline: Anonymous
Volume: 144
Number: 6
ISSN: 10417958
Publication Date: 06-01-2000
Page: 14
Type: Periodical
Language: English

The Break-time challenge question in March (p 70) asks what causes drills to walk or wander not on center. One problem is that these drills may be sharpened not upon center. However, the drill-point geometry usually causes the moot point

Conventional drill grinds do not provide any cutting geometry for the entire thickness of the web. This can be corrected through using one of the newer drill grinds of that kind as the "S" point





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