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Re: [TowerTalk] Drill bits

Subject: Re: [TowerTalk] Drill bits
Reply-to: "Tower and HF antenna construction topics." <>
Date: Wed, 24 Mar 2010 10:15:23 EDT
List-post: <">>
Guy, did you use some oil to reduce friction/heating? Did you slow the  
drill speed way down to reduce heating?
Gerald K5GW
In a message dated 3/23/2010 11:12:03 P.M. Central Daylight Time, writes:

Hi  all,

I don't know why this is so hard.   I'm  trying to drill out some hole on 
some 3/8" steel plates that I'm going to have  galvanized.   I bought a 
13/32" drill bit and it worked great for  about 10 holes or so.   The problem 
that I have about 140 more to  go.   Any recommendations on a good quality 
drill bit?    


Guy, N7ZG

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