[TowerTalk] Dismantling an old 40m beam

[David Gilbert]

Since he said the elements were held together with screws I suspect that 
the problem is actually the hole deformation anyway.  Screws push 
material from one tube into the other tube, making a kind of pseudo 
rivet that remains even after the screw is removed.  Drilling out the 
hole might work.

73,
Dave  AB7E


On 3/11/2020 5:37 AM, john at kk9a.com wrote:
> Since aluminum tubing is thin and it has very high thermal 
> conductivity I question how effective this method is.
>
> John KK9A
>
>
> Tom Hellem K0SN
>
> Ignacy-
> Try heating the larger diameter tubing portion close to the joint 
> while simultaneously cooling the smaller diameter portion which is 
> telescoped inside of it.
>
> Tom H
> K0SN
>
>> On Mar 6, 2020, at 5:48 AM, Ignacy Misztal <no9e at arrl.net> wrote:
>>
>> I bought a 40m old beam that needs to be dismantled. With screws out the
>> elements do not move. Any idea what to do?
>>
>> Ignacy, NO9E
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk