A few years back I was rebuilding an antenna that had been up since about
1989. Two pieces of telescoping aluminum tubing were corroded together and
would not come apart. There was no way I was going to reuse them without
getting them apart, cleaning them, and applying some Penetrox or Noalox
before putting them back together.
Figuring I had nothing to lose, I decided to try something a bit
far-fetched. My thinking was if I destroyed the aluminum tubing trying to
separate the 2 pieces, I would be no worse off. So, I tied one end to a
large pine tree, and the other end to the rear frame of my car. I used lots
or turns of rope so as I pulled on the stuck joint the ropes would grip the
tubes tighter. I drove the car very slowly away from the pine tree, and much
to my pleasant surprise, the 2 tubes came apart undamaged. Now, this method
is not something I recommend anyone else, but it actually did work, at least
that time, for me.
Marsh, KA5M
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Richard (Rick) Karlquist
Sent: Sunday, June 12, 2016 4:30 PM
To: StellarCAT <rxdesign@ssvecnet.com>; Towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Loosening Al tubing to Al Tubing
On 6/12/2016 5:29 AM, StellarCAT wrote:
>> wouldn't budge. Heating I don't believe works - its near impossible
>> to
> heat them independently - so they expand together... I tried WD-40,
> and
> Gary
>
While reading this, I thought of this idea (that I haven't seen
before): Heat up the tubing (both the inner and outer) and then squirt
water into the inner tubing to rapidly cool it. For extra credit, apply
liquid nitrogen :-). Has anyone tried this, at least with water? Seems
plausible, especially if you get the tubing well above the boiling point of
the water. You could maybe use salt water, which boils at a lower
temperature?
Rick N6RK
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