Copper Sulfate – Saline Etch for Aluminum – Test 20: Large 3 and 5-minute Plates

Name: Nick Osetek & Tessa Chambers                                                 Date: 5/31/2018

Room Temperature: 76*F                                                                    Humidity etc: Dry

Experiment Title: Large 3 & 5-minute Plates

Experiment Goal: To see the distribution of tone on a large plane. Will the tone be more or less consistent in tone compared to our smaller 3×3 inch plates.

Plate material: Aluminum 5052

Plate Preparation: Degreased with Bon Ami and soy sauce, backed with contact paper.

Evaluation of Plate Preparation: Normal (Not steel wooled)

Etching Bath Notes: At this point the bath is still etching normally, still greenish and murky.

Time in bath3 min, 5 min

After Bath Evaluation: Plates had some spots from possible grease after etching, bath was murkier due to copper residue.

Removal of Grounds: N/A

Inking Methods: Bone black, 10% Burnt Plate Oil 00

Paper Type: Hahnemuhle Copperplate

Soaking Time: 30 min – 1 hour

Press, blanket set up, pressure: Praga press, 2 catchers, 1/8, 1/8

Conclusions: Our prints were fairly consistent with our past smaller 3×3 inch plates, even though these were larger planes. Our 3-minute plate was a tad lighter and spottier compared to our 5-minute plate which printed a much more solid black tone.

Pulling the 3-minute plate from the mordant

3-minute plate & print

5-minute plate & print

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