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Warren's involvement with opaque silver glass began during his training in 1970. Boyce Lundstrom’s strong background in glaze calculations (reduction colors, copper reds) led him to experiment with silver. Under his supervision, Warren mixed, loaded, adjusted reduction and oxidation levels, dumped batches, recalculated, reloaded—learning to perfect the glass in the furnace. Warren went on to use this knowledge to create colors and ‘Cats Paw’ Design in ‘Bull’s Eye’ Sheet Glass. Warren's focus is on finding all ways to create line designs and color ranges—most importantly, to control them.
Warren's work is a single homogenous mixture that can give a wide array of opaque colors. What’s in the glass is a mix of tin, silver, and copper. Knowing how to melt the batch is a start, more importantly is knowing how to work the glass during blowing. Each design and color range requires a different approach. In general, early in the process, Warren works the surface to create a memory that with heating/cooling will produce the desired results. Adjusting how he works, produces different colors and patterns in the next piece. He makes his own color. Images are created and controlled during the blowing. After cooling, many forms are cut, ground and shaped before all are acid-etched. |
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