http://www.accusystemscorp.com/FAQ's%20-%20Index.htm <http://www.accusystemscorp.com/FAQ's%20-%20Index.htm> The above link has been useful to me in calculating V-Scoring parameters based upon the panel I was designing... ;-) Bill Brooks PCB Design Engineer DATRON WORLD COMMUNICATIONS INC. 3030 Enterprise Court Vista, CA 92083 Tel: (760)597-1500 Ext 3772 Fax: (760)597-1510 mailto:[log in to unmask] <mailto:[log in to unmask]> IPC Designers Council, San Diego Chapter http://www.ipc.org/SanDiego/ <http://www.ipc.org/SanDiego/> http://home.fda.net/bbrooks/pca/pca.htm <http://home.fda.net/bbrooks/pca/pca.htm> -----Original Message----- From: Ed Valentine [mailto:[log in to unmask]] Sent: Tuesday, August 07, 2001 6:20 AM To: [log in to unmask] Subject: Re: [DC] V Scoring Charlene - Assuming you are going to do a manual breakaway of the boards, I recommend a final web thickness of 0.012" with 30 degree cutters on FR4. If you are using mechanical/machine separation you can go slightly thicker. The thin web thickness allows for easy, manual breakaway with minimal potential damage to the components and the solder joints. I'm sorry but I have not used RF35 so I am not familiar with its physical characteristics. Ed/ Ed Valentine Electronics Manufacturing Solutions 8612 Mourning Dove Road, Raleigh, NC 27615 Phone: (919) 270-5145, Fax: (919) 847-9971 Email: [log in to unmask] <mailto:[log in to unmask]> Website: http://www.ems-consulting.com <http://www.ems-consulting.com> ----- Original Message ----- From: Charlene <mailto:[log in to unmask]> Dwyer To: [log in to unmask] <mailto:[log in to unmask]> Sent: Monday, August 06, 2001 8:01 PM Subject: [DC] V Scoring What depth, and angle do you spec on your panel drawings for scoring a board with a .062 thickness? Does it make a difference on the Board Material because we are using a combination of FR4 and RF35 for a 4 layer board. -Char _____ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ <http://phonecard.yahoo.com/>