I concur, Working in the pcb assembly world and also designing my own boards we strongly recommend customer to place a Keepout line approximately 2mm inside the board outline. Not only does this address potential problems with tracks and pads been too close to the edge of the board but also addresses the fact that components themselves, where possible, should be kept from the edge so that the boards can be handled and `gripped' for component insertion etc. It is also common practise to panellise multiple boards and to also add tooling strips which usually use a V-Groove to allow the boards to be quickly separated when required. V-grooving requires a minimum clearance between the groove itself and the cutting blade and we have found in practise that a couple of millimetres provides minimum clearance for most requirements.
Best Regards (Mr) Laurie Biddulph Mobile: 0400 257 645 Elby Designs ABN: 70 022 727 605 http://www.elby-designs.com This e-mail and any files transmitted with it are confidential and intended for the addressee only. If you are not the addressee you may not copy, forward, disclose or otherwise use it, or any part of it, in any form whatsoever. If you have received this e-mail in error please notify the sender and ensure that all copies of this e-mail and any files transmitted with it are deleted. Any views or opinions represented in this e-mail are solely those of the author and do not necessarily represent those of Elby Designs. Although this e-mail and its attachments have been scanned for the presence of computer viruses, Elby Designs will not be liable for any losses as a result of any viruses being passed on. ----- Original Message ----- From: Brad Velander To: Protel EDA Discussion List Sent: Saturday, April 22, 2006 10:29 AM Subject: Re: [PEDA] Fwd: 99SE PCB Component gone afar. Guys, Yes AJ is correct, however using the keepout for your board outline brings in all sorts of DRC rules issues for everyday occurrences that must break the rules. (i.e. mounting holes close to the board edge, copper that must be continued right out to the board edge, components (connectors) where their outlines cross the board edge, etc., etc.) Using the Keepout for the board outline is just plain impractical in many cases. (read: increases work and DRC complications, possibly leading to drastic productivity reduction.) Sincerely, Brad Velander Senior PCB Designer Northern Airborne Technology #14 - 1925 Kirschner Road, Kelowna, BC, V1Y 4N7. tel (250) 763-2329 ext. 225 fax (250) 762-3374 -----Original Message----- From: M P [mailto:[EMAIL PROTECTED] Sent: Friday, April 21, 2006 4:46 AM To: [email protected] Subject: Re: [PEDA] Fwd: 99SE PCB Component gone afar. Duane, if you setup a clearance rule between keepout object kind and whole board, you could have outlines on keepout layer identical to real board outlines (probably found on some other layer). Igor ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[email protected] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected] ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[email protected] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected]
