tag:blogger.com,1999:blog-7074377344031686794.post6493012759169622904..comments2024-02-15T18:17:35.363+10:00Comments on Jo Lankester : How to mix a Copper Sulphate for a Zinc Plate Aquatint EtchJo Lankesterhttp://www.blogger.com/profile/13731699626927262748noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-7074377344031686794.post-44028316409778215202022-04-26T23:19:20.962+10:002022-04-26T23:19:20.962+10:00You didn't explain how to obtain an aquatint (...You didn't explain how to obtain an aquatint (tone) without rosin! Surely leaving the plate in the copper sulphate solution would result in an open bite?Anonymousnoreply@blogger.com