I applied the Edinburgh mix over a previously etched copper plate to see if the etched lines will effect how well the Lift Ground adheres to the surface.
Date: November 24, 2009
Researcher’s Name: Elena Betke Brunswick
Plate Material: .032 Copper
Plate Size: 5 in x 6 in
Room Temperature: 74° Overcast
I cleaned the plate’s surface with Bon Ami twice. Degreased with soy sauce that was rubbed onto the copper plate using a piece of rolled felt, rinsed and then dried with a clean rag and blow dryer. The Edinburgh lift is a mixture of 3 teaspoons of Da Vinci Masking Fluid, 5 eraser tips of gouache, and half a teaspoon of warm water. However as I tried to mix the Lift Ground it released a foul odor and had the consistency of rubber. I tried to add more water but it was still not functioning. I switched back to the original Windsor Newton masking fluid. Not only did the fluid mix easily but retained a great brush texture on the plate. I added more tonal areas to the print allowed the plate to dry in the open air for 30 minutes. I applied Z-Acryl with a foam brush and placed copper plate in the hotbox for 30 minutes. I submerged the grounded plate in a bath of warm tap water for 5 minutes and rubbed the Lift Ground off with gloved hands. I applied an aquatint in 5 passes with a Paasche airbrush at its finest setting. I placed the copper plate in the hotbox for another 20 minutes.
The plate was etched in a vertical etching tank of Ferric Chloride at 36° Baume.
Timed Application of Mordant
7 minutes 30 seconds
Removal of Grounds
The Z-Acryl hard ground emulsion was removed after 10 minutes in a stripper bath of Arm & Hammer Washing Soda and water (100 grams/1 liter). The ground lifted easily.
After Bath Evaluation
Overall a great etch there are a few small places the ground didn’t hold but this is a minor occurrence.
The plates were inked with unmodified Graphic Chemical & Ink Co. Bone Black Etching Ink #514. The ink was carded onto the copper plate with mat board scraps and wiped with used tarlatan.
Paper Type: Rives BFK Cream
Paper Soaking Time: 30 Minutes
Press Blanket Setup: Sizing Catcher and Pusher, 8.5 pressure, Small Takach Etching Press
The Lift Ground held up on a previously etched plate. The brushstrokes translated well.