I suppose we could all go back to 500 volt electrical test. Dished down circuits would probably burn out if we did that...... Dave Sullivan Rockwell Collins, Inc. NOTE: I'm quite sure my company would disavow any knowledge of my existence if they thought I was serious about the last statement. ______________________________ Reply Separator _________________________________ Subject: Re:Re: FAB-Dish downs in copper circuits Author: [log in to unmask] at ccmgw1 Date: 1/28/97 9:29 AM Mike Covell's explanation of the dish-down in the circuit trace (hole in the resist laminator roll due to attack by sulfuric acid) is en- lightening. It makes me wonder how many more boards produced on that laminator are at risk, and how many other rollers also have holes. This seems like a problem that would be very easy to miss. A dish- down would surely be much more difficult for a person or a vision system to detect than a mouse-bite. Gordon Davy *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * 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] * *************************************************************************** Received: from by ccmgw1.cacd.rockwell.com (SMTPLINK V2.11) ; Tue, 28 Jan 97 09:29:43 cst Return-Path: <[log in to unmask]> Received: from stealth.cacd.rockwell.com (stealth) by mailserv with ESMTP (1.40.112.8/16.2) id AA165785385; Tue, 28 Jan 1997 09:29:45 -0600 Received: by stealth.cacd.rockwell.com; id JAA21934; Tue, 28 Jan 1997 09:29:11 -0600 Received: from unknown(168.113.24.64) by stealth via smap (V3.1.1) id xma021927; Tue, 28 Jan 97 09:29:05 -0600 Received: from ipc.org by simon.ipc.org via SMTP (940816.SGI.8.6.9/940406.SGI) id JAA04496; Tue, 28 Jan 1997 09:18:56 -0800 Resent-Date: Tue, 28 Jan 1997 09:18:56 -0800 Received: by ipc.org (Smail3.1.28.1 #2) id m0vpENd-0000X1C; Tue, 28 Jan 97 08:19 CST Resent-Sender: [log in to unmask] Old-Return-Path: <[log in to unmask]> Mime-Version: 1.0 Date: Tue, 28 Jan 1997 09:27:56 -0500 Message-Id: <[log in to unmask]> From: [log in to unmask] (DAVY.J.G-) Subject: Re:Re: FAB-Dish downs in copper circuits To: [log in to unmask] Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Resent-Message-Id: <"Abpym.0.lLA.VhWxo"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/9698 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * 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] * ***************************************************************************