Hi Sam... how ya been?
I used to sell the expanding foam - caution - it expands a lot more than
you think.
A common problem in the door and window business is too much of the foam
being used causing the jambs of the doors and windows to bind their
operation...
Even though it goes in all soft and puffy - once it starts to set up it
is still expanding and it can "push" with a lot of force...had to go
visit one job with a bunch of very expensive French doors where they all
would not operate - the homeowner was real upset that it was not the
fault of the door units but of the carpenter from being too heavy handed
with the foam...
Epoxy IS available in smaller size batches... I think that "potting"
with it would be a better option than the foam...the foam is nice for
those rotor control lines or coaxes coming through the wall, however -
puts up a roadblock for those convoys of Army Ants.... hooo - ah
$ .02
Jim, K4OJ
Sam Effinger wrote:
> Question: I am going to build a 1:1 balun and want to put in in a PVC
> pipe..the question is what can I fill the pipe with....I am thinking about
> filling the pvc pipe with that expandable foam that is used to fill cracks
> around doors etc.
>
>
> Is that stuff corrosive ...any heat concerns ??
>
> I know some folks use it in the end of elements to seal the end and hold the
> rope in place..but will it work for the seal in a balun ???
>
> Glen K6NA makes the best baluns and uses epoxy ( he isn't making any at this
> time )...I don't want to buy all the epoxy as I only want to make a couple..
>
> any ideas ??
>
>
> Thanks for any help...
>
> Life is good....
>
> Sam K9SD
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
|