Name: Nick Osetek & Tessa Chambers Date: 6/12/2018
Room Temperature: 73*F Humidity etc: Dry
Experiment Title: Depleted Bath Revival
Experiment Goal: After killing our bath by letting a large piece of aluminum eat away from a few days. Our goal was to try reviving the bath by adding 762 grams of copper sulfate. We would test the dead bath and the revived bath.
Plate material: Aluminum 5052
Plate Preparation: Degreased with Bon Ami and soy sauce
Evaluation of Plate Preparation: Normal (Not steel wooled or backed due to small aluminum test strip)
Etching Bath Notes: Before Revival: The bath was clear with copper fungi looking mass floating on the top from dissolved aluminum plate. There was also a lot of copper sediment build up at the bottom.
After Revival: The bath turned back to its typical minty green, but not back to its new bright blue color.
Time in bath: Dead Bath: 5 min Revived Bath: 5 min
After Bath Evaluation: The bath was still minty green.
Removal of Grounds: N/A
Inking Methods: Bone black, 10% Burnt Plate Oil 00
Paper Type: Hahnemuhle Copperplate
Soaking Time: 15 min
Press, blanket set up, pressure: Praga press, 2 catchers, 6/8, 6/8
Conclusions: Our test strip before revival was expectedly light.
After adding 762g of copper sulfate & etching for another 5 minutes, our test strip printed much darker as our original prints were after etching in a new bright blue bath. The darkness of our test strip confirmed that we successfully revived our bath.