I am testing a soft ground mixture that consists of 3 parts Graphic Chemical Water based Block Printing Ink Peacock Blue, 2 parts Golden Acrylic Silkscreen Medium, and 1/2 part Golden GAC 200. I am using standard tracing paper as the transfer paper for the drawing.
Date: January 14, 2008
Researcher’s Name: Amelia Vottero
Plate Material: .032 Copper
Plate Size: 4 in x 3 in
Room Temperature: 63° F
I degreased the plate with Bon-Ami and water made into a paste. The paste was rubbed across the plate surface and rinsed away with water. The copper plate was blow dried and finished with a clean towel. I rolled a thin amount of soft ground across the plate’s surface just enough so that I could not see the copper sparkle through the ground. The ground was stiff and took a long time to fully apply to the copper plate. I let the plate sit for 10 minutes before drawing with a #2 hard pencil and regular tracing paper. After I completed 30 minutes of drawing the ground became increasingly less tacky. After that time drawing through the ground could only be done by pressing really hard. After finishing my drawing I heated the copper plate on the hot plate to dry the ground before etching.
The plate was etched in a vertical etching tank filled with 35° Baume Ferric Chloride.
Timed Application of Mordant
20 Minutes/Rinse/10 Minutes/Rinse/15 minutes/Rinse (A rinse consisted of lifting the copper plate out of the vertical tank, rinsing the plate with cold water, and then returning it to the etching tank.)
Removal of Grounds
The ground was removed using a stripper bath of Arm & Hammer Washing Soda and water (100 grams/1 liter). After soaking the plate in the stripper bath for 10 minutes I rinsed the plate under warm water.
After Bath Evaluation
The etched marks are few and little detail has translated in the etch.
The plate was inked with unmodified Graphic Chemical Bone Black and 50% Graphic Chemical Stiff Black. The ink was carded on with a orange plastic scraper, wiped with used tarlatan, and hand wiped.
Paper Type: Hahnemule Copperplate
Paper Soaking Time: 15 Minutes
Press Blanket Setup: Small Takach, 2 Blankets, 8.0 pressure
The print is light. There are thin spots and false biting in the ground.