Date: April 22nd, 2016
Researchers: Katie St. John and Liv Stanislas
Room Temperature: 67 degrees Fahrenheit
Humidity, etc: Dry, no humidity
Materials: 4″x 6″ Copper Plate 0.032 Gauge, 365 2X Whole Foods Market Concentrated Laundry Detergent, Ivory Bar Soap, Guerra Titanium White Pigment, Linseed Oil, Water, and Graphic Chemical Bone Black Ink.
Abstract: This experiment’s purpose was to see if we could replicate our results using the 365 Powdered Laundry Detergent and Shaved soap recipe.
Plate Preparation (surface prep, ground application, image making process, etc.):
Burnished out significant lines, steel wool sanded then Putz Pomade applied; Cleaned with 7th Generation Degreaser; degreased with soy sauce, backed with contact paper
Sprayed acrylic aquatint through an airbrush onto the plate, then heat-set the aquatint in a hot box for 20 minutes before adding soap ground, plate was used the same day.
Soap ground recipes: 365 Whole Foods MarketLaundry Detergent ½ tsp, Shaved Soap ½ tsp, Guerra Pigment ½ tsp, Linseed Oil ¼ tsp
*Shaved soap was grated on a typical kitchen grater, smallest size grater available, and then crumbled by hand to a consistency of short-grain rice. The crumbled soap at this point is four weeks old.
Application of the soap ground:
The application of the ground, made fresh that day, was exactly the same as it was in prior uses. It held texture really well and applied really smoothly to the plate. It also held a complete range of tonality.
Etching bath notes:
38.5 degrees Baume ferric chloride
Etched in horizontal bath with agitation every 2 minutes or so
Time in bath: 23 minutes
After bath evaluation
The ground was much stronger in the bath, with less flaking and more preserved detail.
Removal of grounds (chemicals used and evaluation of effectiveness)
Removed residual soap grounds with 7th Generation degreaser and wiping with rags: The degreaser was effective, and the ground was more resistant to removal.
Placed in stripper bath for 15 minutes to remove the aquatint
Placed in deoxidizer bath
Inking methods (type of ink used, modifiers, wiping/rolling techniques)
Ink: Graphic Chemical Bone Black with no modifiers
Tarlatan wiping with a short paper wipe to finish
Paper type: Hannemuhle Copper Plate Bright White, ⅛ sheet
Soaking time: 25 minutes
Press (blanket set up and pressure): Tabletop Takach; 0.6 pressure with 2 sizing catchers
Conclusions: The plate came out with the same amount of texture, detail, and tonality as the prior test. The replication worked!