Just a word of warning, there have been several TechNet e mails about this first drill approach being dangerous if an alternative to electroless copper system is in use and any circuitry does not have a clearance around the nonplated hole as the alternatives do leave the hole with a unremoved conductive layer that can result in leakage. Reportedly it is not like the electroless where you can remove all the plating. ---------- From: [log in to unmask] To: [log in to unmask] Subject: Re: MISC: drill files 1 or 2 Date: Wednesday, September 25, 1996 1:59PM Since the effort is made to drill as many of the holes in the primary drill operation as possible, we prefer that the drill be sent as one file to reduce the number of steps in the CAM operation. Non-plated holes are only drilled in a secondary operation if they cannot be tented in the imaging plating operation. Don Bloye PC World ______________________________ Reply Separator _________________________________ Subject: MISC: drill files 1 or 2 Author: [log in to unmask] at INET Date: 9/25/96 2:04 PM Hi - :) What is prefered from the fabricators point of view: One drill files containing both plated and non-plated holes? or Two drill files one plated the other non-plated? Reasons? --------------------------- John Laur Rockwell Automation Allen-Bradley Co Inc. 1201 South Second Street Milwaukee, WI 53204 +1 414 382 2162 (fax) +1 414 382 2393 (phone) [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. * *************************************************************************** *************************************************************************** * 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. * *************************************************************************** *************************************************************************** * 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. * ***************************************************************************