You can perform a routing operation after electroless copper in the affected area and then process as normal. The electroless deposit will generally not be prone to deformation. -----Original Message----- From: Ted Wiktorowicz [mailto:[log in to unmask]] Sent: Wednesday, May 19, 1999 12:51 PM To: [log in to unmask] Subject: To anyone who can help I have a design that requires Castelated Via's (via's that have their centres lie on the edge of a board, where after a machining operation only half of the via is left exposed). The via's are 0.025" @ 0.100" centres with a total of 17 via's. I would like to know if anyone knows of a functional process that will not damage or push in the barrel of the hole or leave slivers after the process is completed. Your help is appreciated. Ted ################################################################ 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 ################################################################