STEPHEN,
        UNLESS YOU REALLY NEED TO DO ODD LAYERS, DON'T DO IT.  IT WILL COST 
     THE SAME IF NOT MORE THAN THE NEXT EVEN LAYER COUNT DESIGN.  UNLESS 
     YOU'RE VERY CAREFUL WITH YOUR COPPER BALANCE AND LAYOUT YOUR BOARD CAN 
     COME OUT LOOKING LIKE A POTATO CHIP AFTER ITS BEEN LAMINATED.  WAY 
     BACK WHEN I WAS FIRST DESIGNING I DID AN ODD LAYER COUNT BOARD AND 
     I'VE NEVER DONE ONE AGAIN.  IT WAS ABOUT 6 INCHES LONG AND 3.25 WIDE.  
     WHEN RESTED ON A FLAT SURFACE THE CORNERS WERE ABOUT 3/16 OF AND INCH 
     FROM ABOVE THE SURFACE.  I TRIED TELLING THEM IT WAS A FLEX CIRCUIT 
     BUT, NO ONE WAS BUYING IT....
     
     REGARDS
     
     ROB BUTTERWORTH
     ADC VIDEO SYSTEMS
     WALLINGFORD, CT
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: FAB : Odd Layer PCB's
Author:  [log in to unmask] at internet-mail
Date:    6/27/96 1:14 AM


Dear TechNet,
     
Can anyone give me pro's and con's for designing Odd number of Layer 
PCB's i.e. 3 and 5 layer boards
     
Stephen Cooper
Manufacturing Projects Manager
     
SCITEC LIMITED
Apollo Place
Lane Cove NSW 2066
Australia
     
Phone   : +612 428 9500
Fax     : +612 428 9589
Email   : [log in to unmask] 
Website : http://www.scitec.com.au