If your Cr layer is thin you might be able to just sputter it off, even with oxygen. -Michael Martin U. of Louisville >>>11/28/2007 2:34 PM >>> Has anyone had any success etching Chrome using plasmas from CHF3, SF6, O2, or N2 (or any combination thereof)? I don't have any good reason to suspect that any of these should work, but I can't use normal Chlorine plasmas with this device, as the exposed Au I have restricts which machines I'm permitted to use. I'm currently using wet etching, but I'd like to reduce the undercutting a bit.