Dave and all, those spade bits are quite a bargain considering you can buy
a whole set for about the cost of a single metal bit or hole saw.
In addition, they work very well on aluminum, with a bit of oil for
lubrication. I have drilled holes up 1 1/4" diameter in 3/8" thick aluminum
ease. This works better with a drill press but can be done with a hand held
drill with a little care and a firm grip on both the drill motor and
In a message dated 10/22/2010 6:47:31 A.M. Central Daylight Time,
For those wood working challenged people out there, there are 3 popular
methods for putting holes in wood floors... assuming of course that you
you have a wood floor under the shack and aren't really talking about a
concrete floor where there are only 2, jackhammers and dynamite. For wood
floors you can drill holes, the best option are hole saws or spade bits
since even the largest normal twist bit can just barely fit a good size
through. If you need a larger hole you can get hole saws up to about 3"
can use with a normal hand drill. Beyond that, or if you don't want to go
round you can use a small drill to make a starting hole and then enlarge it
with a saw, either manual or small jigsaw works well, for bigger and
holes use one of those demolition saws. The final method is a fire axe.
They make really quick big holes but at the penalty of leaving a few
splinters around the edges.
David Robbins K1TTT
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> -----Original Message-----
> From: Dan Evans [mailto:firstname.lastname@example.org]
> Sent: Friday, October 22, 2010 00:38
> To: email@example.com
> Subject: [TowerTalk] Bringing feedlines through the floor
> This brings up an issue I hope to work on soon...
> I will be running about 6 feedlines under my floor and up to my shack.
> There will likely be two runs of LDF4 and probably 4 runs of RG8. The
> SPG will be just outside the house, before the lines go under the floor.
> I haven't decided yet best / neatest method of passing the lines through
> the floor. I've considered cutting a 4x12 rectangular opening in the
> floor about the same size as a heat duct, or something similar. Just
> thought I would ask, "how do you do it?"
> You can't fix stupid, but you can vote it out!
> Amateur Radio Emergency Service, Clark County Indiana. EM78el
> K9ZF /R no budget Rover ***QRP-l #1269 Check out the Rover Resource Page
> <http://www.qsl.net/n9rla> List Administrator for: InHam+grid-loc+ham-
> Ask me how to join the Indiana Ham Mailing list!
> On 10/21/2010 9:06 AM, firstname.lastname@example.org wrote:
> > Ditto.
> > I'm willing to bet that the great majority of hams use an aluminum
> > plate for SPG. Mine is 1/4" thick and replaces the foundation 'vent'
> > under my shack window.
> > 73
> > Don
> > N8DE
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