C.S. POGUE

NEWS FOR ETCHING ARTISTS!!

D&S BIO-BLAC

BIO-BASED HARD GROUND and STOP-OUT for Intaglio Plates

• Bio-Friendly Solvent and Resin
• Inert Mineral Dye for Contrast
• Brush-On, Self-Levelling Coating
• Thin Film for Finest Etch Lines
• Smooth, Uniform ‘Needle Feel’
• Excellent Resist for Ferric, Acid, Electro-Etching Processes
• Removal with Bio-Solut after etching is safest...Denatured and Rubbing Alcohols also work
• Use in Well-Ventilated Area

Offered by: Renaissance Graphic Arts

Product Description:

BioBLac Hard Ground is an excellent resist for ferric chloride, electro-etching electrolytes, and even nitric acid. It's 100% bio-based film-forming ingredient has been used for etchings since the Renaissance. Thin films will result in finest lines; thick films can yield fuzzy lines if so desired.



Instructions for Use:

Insure that the plate is thoroughly degreased and dust-free. Set it on blocks in a well-ventilated area with the plate overhanging the blocks on all 4 sides. Insure that the plate is perfectly level so the BioBLac doesn't flow to the low side. Brush on a thin coat with a nylon bristle brush, holding the brush almost parallel to the plate surface and barely touching. Brush left to right, then top to bottom, then along both diagonals to insure uniform coverage. Do not over-work, and don't worry about brush marks...the coating will self-level. Let it dry thoroughly in the ventilated space, then scribe away!

After etching, BioBLac Hard Ground can be removed safely using Bio-Solut (recommended) in a well-ventilated space. Denatured and rubbing alcohols can also be used to remove the ground, but take precautions to avoid exposure to vapors, as those materials have toxic components that may bio-accumulate.