[TowerTalk] Loosening Al tubing to Al Tubing

[Hardy Landskov]

Hi Rick, et al,
Nice science project Rick but I am all out liquid NOX. Recycle what you
have, get new stuff, get on with your life. Been there...My dos centavos
Hardy N7RT/4


-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Richard (Rick) Karlquist
Sent: Sunday, June 12, 2016 5:30 PM
To: StellarCAT; Towertalk
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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