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Old 11-05-2009, 08:34 AM
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[QUOTE=Old Rotor Flap]

I think Ti coated drills from China have more to do with perception than quality. Ti coatings are designed improve tool life in a controlled setting. The only real way to make the Ti coating cost effective is to run the drill in a CNC Mill where feeds and speeds can be acutately controlled. This can't be done with the average drill press or hand-held drill.

Also those CNC drill bits are continually flooded with cooling/cutting fluid which we traditionally do not employ in our hobby.

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