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Date:         Thu, 27 Mar 2003 11:29:26 EST
Reply-To:     FrankGRUN@AOL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Frank Grunthaner <FrankGRUN@AOL.COM>
Subject:      Re:       Re: Dash printed ci
              rcuit
Comments: To: albell@UVIC.CA
Content-Type: text/plain; charset="US-ASCII"

Thought I'd inject a comment here. The Nickel paint is an excellent solution. In a thin trace, it is quite flexible (+/- 40 degrees plus flexure). While I have used fingernail goop on desperate occasion, there are good and inexpensive insulating dopes available at the same source that you will have to go to get the Nickel paint. BTW, a Silver paint is also available for more critical environments. Of course, the surface (after removal of the thin plastic overlayer) must be cleaned. Good, residue-less cleaners are also available at the electronics parts store. I have about twelve foils in various stages of modification heavily gooped in this fashion. No failures over the last 10 years.

That said, I passed this advice along several years ago. I was surprised to receive a desultory missive from a former list member as to how the Nickel paint wouldn't adhere to the foil. Seems he was able to make small extensions of the copper trace which would float above the foil! Upon further investigation, I discovered he had cleaned the foil with WD40! Good grief, a release agent.

Frank Grunthaner


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