Andy,

To cover traces cut when making mods to PWB's, we use solder mask touchup.  It 
all depends on your particular applications though.  Although it isn't instant 
cure, it can be rapidly cured in an oven. The most efficient way to do it would 
be to apply the solder mask touchup just prior to moisture bakeout.

Depending on the number and size of cuts, you could use Kapton tape or "dots" to
cover the exposed traces.  

I don't know of any "instant" adhesives that will withstand direct contact with 
molten solder.  You might be able to get a quick cure U.V. adhesive that can 
withstand the reflow though.

Steve McBride
Frontier Engineering Inc.


______________________________ Reply Separator _________________________________
Subject: PWB trace cut sealing
Author:  MIME7:[log in to unmask] at INTERNET
Date:    7/25/97 2:38 PM


Hi,

Does anybody out there know of an "instant" adhesive type material 
that can be used to seal trace cuts?  This material must be able to 
withstand reflow and wave conditions.  

Currently, we are using Loctite TakPak materials, and they are not 
cutting it.  The temperatures are just too hot, and the material 
degrades and/or loses adhesion.

What do board fabs use to repair scratches?  Perhaps there is an 
"instant" soldermask repair material?


Many thanks in advance,

Andy French
Engineering
Axiom Electronics
Beaverton, OR
TEL (503) 643-6600
FAX (503) 641-0572
Email [log in to unmask]

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]>   *
* with <subject: subscribe/unsubscribe> and no text in the body.          *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact   *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      *
***************************************************************************


***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]>   *
* with <subject: subscribe/unsubscribe> and no text in the body.          *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact   *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      *
***************************************************************************