[TowerTalk] Drill bits

[veblencf at hcc.net]

Try using a washer at the drill site. Fill the washer with oil and then
drill your hole. It will be easier, save your drill and accomplish the job
easier/quicker. I am assuming that you are doing this on the bench and not
in a vertical position. This should work with any quality, sharp drill.
73's
Chris, kf7cob
>
>
>  An HSS type should do the job. You have to use some oil to avoid
> burning/overheating the drill though. If you want to be a little fancy
> you can buy a carbon-nitride drill bit. They, usually, are gold colored
> and come with "life-time warranty" how much that now is worth. You should
> still use oil during the drilling as that extend the lifetime of the
> drill quite a lot.
>
> An other avenue is to resharpen the drill after it gets dull, but that
> requires a grinder and some skill. You get good at it after some time
> though.
>
> Hans - N2JFS
>
>
>
>
>
>
>
> -----Original Message-----
> From: Guy Molinari <guy_molinari at hotmail.com>
> To: towertalk at contesting.com
> Sent: Tue, Mar 23, 2010 11:11 pm
> Subject: [TowerTalk] Drill bits
>
>
>
> 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 is
> that I
> have about 140 more to go.   Any recommendations on a good quality drill
> bit?
>
>
>
> 73,
>
> Guy, N7ZG
>
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