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HelicopterOff Topics › Drilling through a main mast
06-03-2010 03:06 AM  7 years agoPost 1
rudyy

rrElite Veteran

E. Amherst, NY

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Can the cobalt or titanium drill bit capable of drilling through a main mast?

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06-03-2010 03:10 AM  7 years agoPost 2
Dennis (RIP)

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Oregon

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Yes, slowly and with lots of oil for cooling.

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06-03-2010 06:38 AM  7 years agoPost 3
TMoore

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Cookeville, TN

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Depends on how hard the mainshaft is. Most HSS drills are over 62Rc.

TM

Delayed Response Operator Not Engaged

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06-05-2010 03:35 AM  7 years agoPost 4
GMPheli

rrElite Veteran

W. Bridgewater, MA USA

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I drilled through a hardened Bergen mainshaft with a carbide bit. It did destroy the bit though.

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06-06-2010 07:51 AM  7 years agoPost 5
Madbob9

rrNovice

So Cal.

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When I was first learning and crashing a lot,I made my own main shafts out of drill rod. I used tungsten carbide drills with constant cooling with good success.No spot facing was required but made a mess on a regular drill press with all the coolant required.

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06-06-2010 01:49 PM  7 years agoPost 6
Robco

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Cumberland Gap Virginia

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colbalt or carbide bits works the best for me, use heavy weight oil and drill slow.......Robco

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06-06-2010 02:01 PM  7 years agoPost 7
rudyy

rrElite Veteran

E. Amherst, NY

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Will Triflow work to reduce the hear build up?

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