Hi All, Some time back there were some alternative processes for etching teflon boards mentioned on Technet. The ones I am seeking to find were those of a Sodium etch I think. What sodium compound it was, I don't remember but it was not the Napthelene. I am familar with the Plasma alternatives but would like to know more about the chemical alternatives and/or the suppliers of the chemistry. Responses would be greatly appreciated. Regards, Les Connally ################################################################ 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 ################################################################