To whom asked. It seems there may be a need to look at this from the other end. Most of the "pin contact to mating flat surface combinations" I have seen almost allways have a spring-loaded pin and the end is rounded. If this design really needs a sharp point to make contact other much harder materials may be in order. Bob Wolfe ################################################################ DesignerCouncil 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 DesignerCouncil <your full name> To unsubscribe: SIGNOFF DesignerCouncil ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################