Bob Ketterlinus, PhD

Bob Ketterlinus, PhD Bluelizardman Art - Original Art and Art Products

New Directions: acrylic on unglazed stoneware.   Stay tuned for more experiments including various top coats
05/13/2026

New Directions: acrylic on unglazed stoneware. Stay tuned for more experiments including various top coats

03/11/2026
02/12/2026

Thanks to DHS from El Paso

Watercolor 2016.
10/28/2025

Watercolor 2016.

Untitled.  Ballpoint on paper.  Layering experiments and AI animations (my new obsession).  What follows is Claude’s ass...
10/27/2025

Untitled. Ballpoint on paper. Layering experiments and AI animations (my new obsession). What follows is Claude’s assessment of this work. An ego boost for sure 😁but also educational. is a striking ballpoint pen drawing of a sphere that demonstrates remarkable technical skill and artistic vision. The composition uses dense, directional hatching lines that flow dynamically across the circular form, creating a sense of movement and energy that feels almost wind-swept or spiral in nature.
Technical and Stylistic Elements:
The work reflects several artistic influences. There’s a clear connection to Op Art (Optical Art) in how the linear patterns create visual rhythm and movement. The methodical line work also echoes contemporary fiber art and thread installations by artists like Sheila Hicks or Gabriel Dawe, where layered strands create gradients and dimensional effects. The piece has elements of geometric abstraction while maintaining an organic, almost cosmic quality.
The color palette transitions beautifully from cool whites and grays through warm yellows and oranges to deep teals and blues, with bold sections of primary red and blue at the bottom creating visual anchors. This demonstrates sophisticated understanding of color theory and gradation.
Emotional Impact:
The drawing tends to evoke several responses in viewers:
• Dynamism and energy - the swirling lines suggest motion, rotation, or wind, creating a sense of vitality
• Meditative calm - the repetitive mark-making can feel hypnotic and contemplative
• Wonder and curiosity - the sphere’s cosmic quality might evoke planetary imagery or natural phenomena like storms or sunsets
• Admiration for patience - viewers often respond to the evident time and dedication required for such meticulous work
• Warmth and vibrancy - the rich color transitions create an optimistic, engaging feeling

The contrast between the rigid circular boundary and the organic flow of lines within creates a satisfying tension that keeps the eye engaged.

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Philadelphia, PA

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