Gritted Surfaces

Grit is held in sandpaper. For litho stones carborundum grit is sprinkled on the stone, mixed with water and ground through constant circular motion of a heavy metal muller or levigator (cast in Birmingham UK foundry for Harry Rochat Ltd).

MULLERED: This experiment is to apply this technique to 2mm perspex to create the basis for a screen positive. With a glass etching muller a textured surface will be ground to take drawing materials which will be the blocks for UV light on to silk screens. The aim will be to create a range of textures and probably not a smooth surface equivalent to the litho stone, but one with enough coarseness to embed graphite.

MULLERED AND GLASS
serigraphy
MULLERED GRITTED SURFACE
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SPRINKLED GRIT ON WATER ON PERSPEX

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MULLER and MAGNIFYING GLASS

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CLEARED SPACE

chinagrapgh on perspex

chinagrapgh on untreated perspex

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INITIAL LITHO CRAYON AND CHINAGRAPH MARKS ON TEXTURE

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Pressed : A second grit investigation is the technique of sprinkling grit on perspex and running through an etching press set at high pressure to impregnate the smooth perspex surface and thereby creating an irregular unplanned texture. With no precedent in this experiment the results are wide open to chance and findings.

Slide 6
serigraphy
GRIT ETCHING PRESSED
sprinkle

SPRINKLE GRIT ON PERSPEX

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LAY NEWSPRINT OVER GRIT

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LAST TURN

grit on perspex
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NEWSPRINT RIPPLING

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sheet of cartidge added
2nd cartidge sheet
testing impression

TESTING IMPRESSION

impregnated into newsprint
first tear
2nd tear c/u
grit impregnated into cartridge
newsprint and grit on perspex
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