I'm interested in getting holes etched in 7740 pyrex glass.With Cr deposition using magnetron sputtering, I find that Cr film lifts off after one or one and half hour of etching in 1:1 HF. ARVIND CARE,IITD INDIA e-mail add: tiwariarvind@hotmail.com ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com