SIMODE is a suiteable tool for etching of Si using different etchants. You can find detailed information on the homepage of GEMAC (http://www.gemac-chemnitz.de) and there on the microsystem-page. Regards Andreas ================================== Dr. Andreas Ehrlich Erwin Sick Engineering GmbH Bergener Ring 43 D-01458 Ottendorf-Okrilla GERMANY Phone: (+49) 35205/524-42 Fax: (+49) 35205/524-22 Email: ehrlicha@engineering.sick.de ===================================