Hi, we use a 40% solution of Fe(NO3)3 in water to etch Ag. Regards Peter Benyimin Hadad wrote: >Hello > >I want to know if someone know how to etch Ag , dry and wet . > Vienna University of Technology Institute of Sensor and Actuator Systems Gusshausstrasse 27-29/366 A-1040 Vienna Austria Tel. +43-1-58801-36643 Fax +43-1-58801-36699