Set this up day before yesterday. Suspended this 9"x12" copper plate over some red
![Set this up day before yesterday. Suspended this 9"x12" copper plate over some red](https://64.media.tumblr.com/03d7de28bf20044242400194f2c8f4df/tumblr_p8uomj7er41x2gislo1_1280.jpg "Set this up day before yesterday. Suspended this 9"x12" copper plate over some red")
Set this up day before yesterday. Suspended this 9"x12" copper plate over some red wine vinegar. In a couple weeks, hopefully I’ll have a nice layer of verdigris built up on it. I’ll be using it to mix with animal glue to attach arrowheads. Verdigris acts as an insecticide. -- source link