|TRADITIONAL METHODS||ILL EFFECTS AND DANGERS||SUBSTITUTE METHODS FOUND|
Etching copper plates:
Etching zinc plates:
Nitrogen dioxide poisoning damage to eyes, lungs, nasal membranes., skin damage.
'Bordeaux etch' non-electrolytic substitute for etching zinc plates.
|Hard and soft ground: |
Smoked turpentine based wax and asphaltum grounds; turpentine based wax and grease.
|Irritation of mucous membranes, Nausea, headaches, toxic or carcinogenic fumes when heated, depression of central nervous system.||Insulating ink ground: |
relief printing ink applied by soft roller - after drying as hard ground - before drying as soft ground.
powdered pine rosin; powdered asphaltum
|Rosin dust allergy, toxic rosin fumes, carcinogenic asphaltum fumes.||Fractint - grounding with relief printing ink, produced in press.|
|Stopping out: |
methanol (methylated spirit) based varnish.
|Headaches, skin and eye irritation.||Ethanol (alcohol) based varnish: shellac flakes dissolved in rubbing alcohol.|
|Cleaning of varnish or ground: |
methanol turpentine, naptha (white spirit, turps substitute).
|See above for methanol. Irritation of mucous membranes, depression of central nervous system, skin damage; suspected kidney damage.|| |
Vegetable Cleaning Agent (VCA) for ink .
|Cleaning inked plates or tools: |
turpentine, naptha (white spirit)
|See above for turpentine and naptha||Vegetable Cleaning Agent (VCA) or vegetable coooking oil - followed by household detergent. Ethanol for dried ink. Acetone for hardened ink.|
Friday, October 06, 2006
at 10/06/2006 03:24:00 PM