There is some stuff in a can called "aluma tap" if I remember the name
right. I use that for cutting, threading. It is like night and day when
threading aluminum without it. Trying to tap dry breaks the threads and
galls in the aluminum. With the tapping fluid they come out nice and smooth.
73
Gary K4FMX
> -----Original Message-----
> From: Jim Miller KG0KP [mailto:JimMiller@STL-OnLine.Net]
> Sent: Wednesday, March 24, 2010 9:44 PM
> To: garyschafer@comcast.net; Tower and HF antenna construction topics.
> Subject: Re: [TowerTalk] Drill bits
>
> You've jarred my memory, what little is left. I do remember now Dad
> also
> using lard and possibly kerosene as there was usually a can of it in the
> tractod shed.
>
> AND THANKS for the mention of aluminum as I had tried threading that
> unsuccessfully a few years ago and resorted to drilled hole and bolt.
> The
> drill wasn't bery happy either but I did git-er-dun.
>
> 73, de Jim KG0KP
>
>
> ----- Original Message -----
> From: "Gary Schafer" <garyschafer@comcast.net>
> To: "'Tower and HF antenna construction topics.'"
> <towertalk@contesting.com>
> Sent: Wednesday, March 24, 2010 12:25 PM
> Subject: Re: [TowerTalk] Drill bits
>
>
> Lard or kerosene for aluminum, cutting oil for steel.
>
> 73
> Gary k4FMX
>
> > -----Original Message-----
> > From: towertalk-bounces@contesting.com [mailto:towertalk-
> > bounces@contesting.com] On Behalf Of johne tds.net
> > Sent: Wednesday, March 24, 2010 11:50 AM
> > To: Tower and HF antenna construction topics.
> > Subject: Re: [TowerTalk] Drill bits
> >
> > Try the gold color bit ( Titanium nitride coated twist bit) and animal
> > fat or lard is the best lub to use.
> >
> > de John K0CQW
> >
> > On Tue, Mar 23, 2010 at 11:11 PM, Guy Molinari
> > <guy_molinari@hotmail.com> wrote:
> > >
> > > 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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