Noppadol, Try looking in: http://www.accuscore.com/faqs.htm They have a very good paper on scoring there. Good luck. Charlie B. Noppadol Sansupa <[log in to unmask]> on 08/22/98 05:11:16 AM Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to Noppadol Sansupa <[log in to unmask]> To: [log in to unmask] cc: (bcc: Charles Barker/US/I-O INC) Subject: [TN] PCB panel design. Dear sir/madam, I am in the process of panel design for the FR-4 double sides 1 oz PCB, 0.4 mm thickness and 1.475 x 1.087 square inch dimension. This is the first designing job for me, I'm looking for the information about the V-cut and perforation requirement. Does anyone can give me some information regarding the following I will appreciate very much. 1. The critical requirement for panel designing. 2. With the 0.4 mm thickness substrate, should I select the v-cut technic or perforation technic for depanelling to serve the firm board during assembly and easy to brake after assembly. 3. How to calculate the v-cut depth relate to the substrate thickness. Further information that is necessary for panel design please advise. I look forward to hearing from someone. With best regards, Noppadol S. ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################