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 newsprint as the transfer paper and a #2 pencil for drawing.
Date: February 27, 2009
Researcher’s Name: Esther White
Plate Material: .032 Copper
Plate Size: 2.25 in x 7 in
Room Temperature: 76°
I degreased the plate with Bon-Ami and water made into a paste. The paste was rubbed onto 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 ground across the plate’s surface just enough so that I could not see the copper sparkle through the ground. The ground was runny and tacky but rolled onto the plate smooth. I waited 10 minutes before I started drawing. The ground stayed workable and picked up alot of detail even in the lighter lines. I drew for 30 minutes pressing hard and holding the pencil perpendicular to the plate. After I finished my image I placed the grounded cooper plate on the hot plate until it was dry to the touch.
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). I rinsed the plate under warm water after soaking it in the stripper bath for 10 minutes.
After Bath Evaluation
The plate looks well etched.
The plate was inked with unmodified 50% 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: Large Takach, 2 Blankets, 1.10 pressure
Great detail in the lines with some false biting in the outer portions of the plate. The drawing is well defined.