W1

Wi1

Widetop

19pcs-HSS-Cobalt-Drill-Set

Place of Origin:   Jiangsu, ChinaBrand Name:   WIDETOPType:   Twist Drill BitUse:   Metal DrillingProduct Name:   DIN338 twist drill bitStandard:  ...

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Rough hole when drilling with twist drill bits

Possible cause for the drill breaks when drilling1: Dull or improperly ground drill2: Lack of lubricant or wrong lubricant3: Improper set-up4: Too much feedHow to do drill breaks when drilling with tw ...

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Drill breaks when drilling with twist drill bits

Possible cause for the drill breaks when drilling1: Spring or back lash in press or work2: Too little lip relief3: Speed too low in proportion to the feed4: Dull drill5: Improper chip clearingHow to d ...

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Drilling the hole with twist drill bits

1: Use the proper feed rate when drilling with twist drill bits2: Avoid the tendency to overspeed and underfeed3: Use low speeds and light feeds for har materials.4: Use higher speeds and heavy feeds ...

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