Correction...We show tooling holes AND global fiducials...
     
     -John


______________________________ Forward Header __________________________________
Subject: Re: Panelling of PCBs
Author:  [log in to unmask] at internet-mail
Date:    08/06/96 08:38


     
     Our fabrication drawing of panelized PWBs is done in AutoCAD as a dumb 
     drawing only.  We provide Gerbers for the 1-up PWB that is to be 
     stepped and repeated (original design in VeriBest or PCAD).  We show 
     tooling holes of global fiducials (SMEMA STD 3.1) on the thieving area 
     of the panel, and we don't provide CNC router files.
     
     I recommend that you talk to your PWB manufacturers and contract 
     assemblers for their requirements and develop a specification that 
     incorporates everyone's needs to minimize the cost of the panel 
     design.  Remember that you buy a panel from the PWB manufacturer no 
     matter how many boards you can put on it.
     
     John R. Kretsch, P.E.
     Sr. Engineer, Design Assurance
     ADC Video Systems
     [log in to unmask]
     


______________________________ Reply Separator _________________________________
Subject: Panelling of PCBs
Author:  [log in to unmask] at internet-mail
Date:    08/06/96 00:45


     Many of our PCBs are panelled to go through our SMT line. Currently we 
     produce the gerbers for one board and provide a drawing showing the 
     PCB manufacturer how to step and repeat the board to produce the 
     panel. We have had problems in the past with the routing of the board 
     outlines and panel breakouts as a result. Most of our boards are 
     currently produced in PCAD 4.51 but we are moving to Veribest.
     Questions.
     1. Is anyone else using Veribest to produce panels?
     2. If you are,are you doing the panelling in Veribest, as a post 
     process in a Gerber editor or do you provide a drawing to your PCB 
     manufacturer showing the panelling? Which do the PCB manufacturers 
     prefer and which have provided you with the best results?
     3. What information do you provide to your PCB manufacturer? Do you 
     provide router CNC files?
     
     Garry Allen                [log in to unmask]
     Hypertec Research Pty Ltd  ph +61-2-98579900
     61 talavera Rd             fax+61-2-98707081
     North Ryde NSW 2113
     Australia 

****************************************************************************
* The 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. *
****************************************************************************


****************************************************************************
* The 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. *
****************************************************************************


****************************************************************************
* The 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. *
****************************************************************************