Foam Glass
Foam glass introduces an element of unpredictability into the work. Subtle variations in material and process can produce markedly different results, requiring careful testing and adjustment over time. Through this process, a range of textures emerges—some delicate, others more pronounced—adding depth and contrast to the finished work.
Measuring and mixing glass powder/frit with foaming agent(s)
The unfired glass is placed into a mould, and fired in a kiln. It is crucial that the piece is observed just as it starts to ‘foam up’ so the kiln can be rapidly cooled to annealing temperature.
This is what happens when I leave it too late to peek in the kiln!
Part way through grinding and polishing. Each piece goes through 5 different grits and a final polish, before sandblasting to remove the resultant shine from the foam glass parts.
After all the polishing, the rocks are stacked and balanced to make a cairn. No glue is involved - the ‘rocks’ are held in place by gravity alone.
Detail of stacked rocks.