Process: Graal and overlay
techniques involve layering different colours of glass and then carving or
sandblasting the outer layers to reveal the underlying colours, creating
intricate designs and patterns.
Use: These techniques are
employed to create decorative glass objects, such as vases, bowls, and
sculptures, with intricate designs and surface patterns.
Observations: Glass artists
closely observe the layering and carving process to ensure the design is
revealed according to the desired pattern.
Cognitive Processes: Artists must
plan the design and layering of the glass to achieve the intended pattern. They
make decisions about the depth of carving and the choice of tools.
Perceptual Stimuli: Visual
observation is crucial in graal and overlay techniques, as artists monitor the
colours and patterns emerging as they carve the glass. The tactile feedback of
handling the glass and tools is also relevant.