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[TowerTalk] drilling chromoly es similar pipe

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Subject: [TowerTalk] drilling chromoly es similar pipe
From: (Bud)
Date: Mon, 30 Jun 1997 01:15:49 -0500
i am doing some antenna repair and part of the repair requires drilling
heavy mast.  by heavy i mean 1/2" wall thickness chromoly steel.  after
burning up several bits and a few $$$ let me pass this tip:  use a 
masonry bit ( carbide tip ), lowest speed on drill press, and lot of
oil.  the most expensive bit i have used only did about 1/8 inch deep
( cost about $12 ) and the least expensive was the carbide tip masonry
type.  it has taken me over 4 hours of drilling to make a 5/8 hole in
some of this stuff but i am betting it wont bend!

put em up high and hope they stay up!

73, de bud

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