Name: Nick Osetek & Tessa Chambers Date: 6/19/2018
Room Temperature: 75*F Humidity etc: Dry
Experiment Title: Depleted Bath Revival #3
Experiment Goal: To once again kill and revive our 5-gallon bath by adding 762g of copper sulfate & salt.
Plate material: Aluminum 5052
Plate Preparation: Degreased with Bon Ami and soy sauce
Evaluation of Plate Preparation: Normal (not steel wooled or backed bc small size of test strip)
Etching Bath Notes: Before Revival: Bath was clear with a large build-up of copper sediment built up at the bottom. Before revival we removed some of that copper sludge from the bath.
After Revival: After the revival with 762 g of copper sulfate and salt the bath turned very dark mossy green. We think the bath was this dark due to the green color of the bath mixing with the large amount of copper residue.
Time in bath: 5 min (2x) for each test strip
After Bath Evaluation: The bath was still cloudy mossy green.
Removal of Grounds: N/A
Inking Methods: Bone black, 10% Burnt Plate Oil 00
Paper Type: Hahnemuhle Copperplate
Soaking Time: 1 hour
Press, blanket set up, pressure: Praga press, 2 catchers, 1/8, 1/8
Conclusions: Dead Bath: Our test strip before revival was consistently light with our past dead bath test strips. The strip barely etched.
Revived Bath: Our revived 5-minute test strip was consistently dark with our past 5-minute revival test strips. We again successfully revived our bath.