>> No ? Afair gold has the lowest wetting current requirement. Think about >> it, it is soft so point contacts are almost impossible, and it does not >> oxydize. > try Mercury. Mercury oxydizes. If the mercury layer is thin enough that it is not replaced by liquid then you have a problem (Mercury oxide is solid afair). Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist