K2 front panel board rubber spacers

[Norm Havercroft]

Greetings!

Spent the weekend on a new K2.  After finishing up the front panel board, the little rubber spacers kept falling off the PC board.  They stick, just not very well.  After one of them fell off for the third time, I tried to pick up the backing paper off my desk with plans to deal with it later only to discover the paper square firmly glued in place.  After pealing it up, it no longer has any interest in transfering the thin adhesive to the pad.  Is it time for super glue?  Any suggestions would be welcome.

73,
N7NSD
Norm
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[Don Wilhelm-3]

Norm,

Glue, yes, but SuperGlue on rubber does not work very well - the superglue
hardens (becomes inflexible) and the rubber must still flex, so it will come
off in time.  I built a K2 recently and found the pads reluctant to stick
too - so maybe Elecraft needs to monitor their pad vendor's process for a
bit, or it may be that the problem is now solved but a few bad ones slipped
through, and a few of us "unfortunates" got kits with bad adhesive.

Rubber cement is a better choice, double sided tape is another, contact
cement will work great, and many of the automotive glues specifically for
rubber (or vinyl) to metal will work superbly - many of these are a form of
contact cement, especially if the instructions indicate that you should let
the glue surfaces dry (or 'tack up') before mating the surfaces.

73,
Don W3FPR

> -----Original Message-----
>
> Spent the weekend on a new K2.  After finishing up the front
> panel board, the little rubber spacers kept falling off the PC
> board.  They stick, just not very well.  After one of them fell
> off for the third time, I tried to pick up the backing paper off
> my desk with plans to deal with it later only to discover the
> paper square firmly glued in place.  After pealing it up, it no
> longer has any interest in transfering the thin adhesive to the
> pad.  Is it time for super glue?  Any suggestions would be welcome.
>
> 73,
> N7NSD
> Norm
>

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[Roger Marrotte]

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of W3FPR - Don Wilhelm
Sent: Monday, October 03, 2005 4:54 PM
To: Norm Havercroft; [hidden email]
Subject: RE: [Elecraft] K2 front panel board rubber spacers


Norm,

Glue, yes, but SuperGlue on rubber does not work very well - the superglue
hardens (becomes inflexible) and the rubber must still flex, so it will come
off in time.  I built a K2 recently and found the pads reluctant to stick
too - so maybe Elecraft needs to monitor their pad vendor's process for a
bit, or it may be that the problem is now solved but a few bad ones slipped
through, and a few of us "unfortunates" got kits with bad adhesive.
I finished a new K2 a week or two ago and I too had a problem with the
little rubber spacers sticking.
Can't remember it happening before.

Roger, W1EM
____________________________________________________________________________
___

Rubber cement is a better choice, double sided tape is another, contact
cement will work great, and many of the automotive glues specifically for
rubber (or vinyl) to metal will work superbly - many of these are a form of
contact cement, especially if the instructions indicate that you should let
the glue surfaces dry (or 'tack up') before mating the surfaces.

73,
Don W3FPR

> -----Original Message-----
>
> Spent the weekend on a new K2.  After finishing up the front panel
> board, the little rubber spacers kept falling off the PC board.  They
> stick, just not very well.  After one of them fell off for the third
> time, I tried to pick up the backing paper off my desk with plans to
> deal with it later only to discover the paper square firmly glued in
> place.  After pealing it up, it no longer has any interest in
> transfering the thin adhesive to the pad.  Is it time for super glue?  
> Any suggestions would be welcome.
>
> 73,
> N7NSD
> Norm
>

--


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