Machine Design
Coaxing is the procedure of increasing

Metal resistance to corrosion by coating
Metal strength by cycling
Fatigue limit by over-stressing the metal by successively increasing loadings
Metal hardness by surface treatment

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Machine Design
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

The new belt will carry more than its share and result in short life
Only one belt cannot be fitted with other used belts
Belts are available in sets
New and old belts will cause vibrations

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