I had a thought and would like comments.  Flame sprayed coatings are an
every-day item for industrial use.  They are easy to apply and can be used
to form thin or thick, adherent films on a variety of substrates.
Over-spray can be easily controlled.  I have also seen papers describing the
very good bond between polyimides and metals when the metal is hot.

     Putting two and two together it seems to me than a fine flame sprayed
solder alloy could be deposited onto polyimide substrate (or other
substrates) in a very precise way using a micro-version of the big guns I
have seen for industrial applications.  It has got to be a lot easier and
cleaner than selective plating.  I would be a great rework tool.

     Has anyone out there tried this?

Pat Hogue
Materials and Processes Engineering
(602) 561-3748

Patrick Hogue
Materials and Processes Engineering
Honeywell Satellite Systems Operation
Glendale, AZ
(602) 561-3748
[log in to unmask]

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################