I tested the full capabilities of the Lascaux Wash Ground incorporating hard ground lines and stopped out white areas.
Date: March 30, 2010
Researcher’s Name: Maya M. Bajak
Plate Material: .032 Copper
Plate Size: 5 in x 7 in
Room Temperature: 74°
The plate was degreased with Bon Ami and water. I covered the whole copper plate with Lascaux 2094 Wash Resist and air dried for 20 minutes. Using an etching scribe I lightly drew through the Lascaux breaking the wash grounds surface but did not scratch into the copper plate. These lines should translate into needle thin lines etched by the Ferric Chloride. I painted spots of Z-Acryl Stop Out Solution onto the copper plate. I let the Z-Acryl Stop Out air dry for 10 minutes and box dry for 20 minutes.
The plate was etched in a vertical etching tank of Ferric Chloride at 38° Baume
Timed Application of Mordant
Removal of Grounds
The ground was removed using a stripper bath of Arm & Hammer Washing Soda and water (100 grams/1 liter). It took 10 minutes to remove the Lascaux ground using a nail scrubber brush.
After Bath Evaluation
Excellent results in this print needle thin lines and stopped out areas look great.
Unmodified Graphic Chemical & Ink Co. Bone Black #514 Etching Ink. The ink was carded onto the copper plate with mat board scraps and wiped with used tarlatan.
Paper Type: Hahnemule Copperplate
Paper Soaking Time: 20 Minutes
Press Blanket Setup: Sizing Catcher and Pusher, 8.5 pressure, Small Takach Etching Press
The fine needle point lines translated exceptionally well through the Lascaux.