High pressure water jets are the coolest thing to watch.  Definitely something that electronics could use in many applications.   Here's another source for water cutting technology: www.jetedge.com  

Kathy 


>>> [log in to unmask] 12/19/02 03:56PM >>>

Hi John,

There is a process that can do a beautiful job but it is not well known in the PCBs and electronics industries. The process is "Cutting with high pressure water jet". The problem is that the equipment is expensive. I am sure you can subcontract this process. There is a PCBs shop in Illinois that has this machine, I do not know if they accept subcontracting. There is also a manufacturer of this equipment in Seattle, not far from you, that either can subcontract the work for you or refer you to some one who can.

You can contact me off line and I will give you the info for these companies. 

Merry Christmas and happy Holidays to all.

Sherif Refaat
Sherif Refaat, Eng.
Technology Roadmap Consultants Inc.
Montreal- Canada
E-mail: [log in to unmask]
Tel. (514) 624 9842
Fax (514) 624 0091
----- Original Message ----- 
From: John Parsons 
To: [log in to unmask] 
Sent: Thursday, December 19, 2002 3:05 PM
Subject: [TN] FAB: Edge Plating and Burrs after Routing


Greetings all,

I think it is time to throw this one out again to all you fab guys out there, especially since we have yet to come up with a way to do it.  I don't think a solution has ever been presented on this forum but I keep hoping :o)

Has anyone come up with a way to produce an edge plated feature that mates up to a non-plated edge without producing a burr after routing AND with no manual finishing required after routing??

We have tried various rout paths and cutting tool types without success.  We even tried a good idea presented on this forum some time back which was to rout after electroless copper.  What we found here though was (and this may be hard to describe) that we ended up shorting the features together (lets assume that we are routing through an array of plated holes on the edge of a board which need to be isolated electrically from one another) by a thin strip of plating along the leading edge of the panel.  The reason for this is that the exposed edge (exposed by the post electroless rout) of copper (on the surface of the panel) while covered on its surface by photoresist still picks up copper and tin plating.  The tin of course then prevents this thin strip from being etched off resulting in the short.

Hopefully you can follow that one.  Anyway, any suggestion?

Best Regards & Merry Christmas
John Parsons
Enigma Interconnect - Vancouver
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