[Amps] Adhesive forTeflon sheet..

[David Cutter]

I'm wondering if it is important for the ptfe to be in intimate contact with 
the base metal, ie no air gaps at all.  If this is to carry substantial rf 
current, it's something to be aware of.  It's not practical with ptfe but a 
dipped component should exclude air pockets.  Not so easy at home.  Just a 
gentle warning, not that I know much about it: something I read on a thread.

David
G3UNA



> ORIGINAL MESSAGE:
>
> On Mon, 21 Mar 2011 19:35:31 +1100, Robert Briggs <vk3zl at bigpond.com>
> wrote:
>
>>Hi All..Can someone enlighten me..I wish to attach Teflon sheet firmly
>>to aluminum tuning discs with no chance of it coming off...What is the
>>best type of adhesive for this purpose? Brand names in the US probably
>>don't help me....If I know the chemical makeup I can probably find
>>something in Oz..
>
> REPLY:
>
> If you really want "no chance of it coming off", I wouldn't not
> recommend adhesive.
>
> I would use Teflon flathead screws and countersink them. Mc-Master Carr
> carries then in the US although they are breath-takingly expensive,
> about $3 USD each even for small ones. Nylon might be a good enough
> substitute.
>
> 73, Bill W6WRT