Anyone who can help me with the following question would be greatly appreciated- I make small wells in boro glass with raised lips around the edges using a gold/cr mask. When I try to do my final gold/chrome etch to get it all the metal off, some metal still hangs on to the edges of the wells or around the lips. I've tried sonicating 1 hr + in gold/chrome etch but it's not seeming to do the trick...anyone know how to comabt what I believe is a surface tension issue? thank you very much, Sarah McQuaide Research Engineer University of Washington