BIG Soft Ground Research Test 7

Test Summary
Based on the previous tests I determined that 15 mintues of pre heating the plate before drawing was excessive. I decided to try 5 minutes of heatsetting in combination with drafting vellum as the transfer paper and an “H” hardness pencil for drawing.

Date: November 10, 2010
Researcher’s Name: Brianna Ashe
Plate Material: .032 Copper
Plate Size: 6 in x 6 in
Room Temperature: 67°F Cool and Sunny

Plate Preparation
The plate was degreased with soy sauce that was rubbed onto the plate using a piece of rolled felt, rinsed and then dried with a clean rag and blow dryer. Several thin layers of black BIG were rolled across the surface of the copper plate, building gradually enough so the copper did not sparkle through the ground. I immediately cleaned the roller and slab with diluted Simple Green and a rag after rolling up the copper plate. Before drawing the plate was heatset at 150° for 5 minutes on a hotplate. The copper plate was removed from the hotplate and allowed to cool. The image was drawn using Clearpoint drafting vellum and a hard “H” pencil. The drawing time was broken into four 15-minute increments, with 5 minute breaks in between. I hardened the ground for 30 minutes on the hotplate until the ground was smooth to the touch without any tack before etching.

Bri's drawing and transfer

Bri’s drawing and transfer

Etching Notes
The plate was etched in a vertical etching tank of Ferric Chloride at 38° Baume.

Timed Application of Mordant
30 Minutes

Removal of Grounds
The grounds were removed using the citrus cleaner “D-Solve” by Z-Acryl. The “D-Solve” has a powerful citrus scent, but does an incredible job removing BIG. It is sprayed onto the plate and wiped clean with a rag. After removing the ground the plate was rinsed in water and deoxidized in the plate brightener bath made of distilled white vinegar and salt (1 gallon/1 cup). Immediately following the brightener bath the plate was dried with a clean rag and blow dryer.

After Bath Evaluation
Tonal areas etched well.

Bri's Etched Plate

Bri’s Etched Plate

Inking Methods
The plate was inked with unmodified Graphic Chemical & Ink Co. Bone Black Etching Ink #514. The ink was carded on with mat board scraps, wiped with used tarlatan, and then palm wiped.

Paper Type: Hahnemule Copperplate
Paper Soaking Time: 30 Minutes
Press Blanket Setup: Sizing Catcher and Pusher, 6.5 pressure, Small Takach Etching Press

Test Conclusion
This process yeilds a highly effective softground drawing. 5 mintues of heatsetting creates a great drawing surface. More tonality is apparent with the use of the drafting vellum. The etched lines look strong and print well.

Printed Images

Bri's Print

Bri’s Print

BIG Soft Ground Research Test 8 >