I have extended the technique of back-filming the shadow projections of acrylic cubes, using the solid acrylic blocks that I have been using for cyanotype printing. I have mostly used the solid acrylic blocks, supplemented with two 50mm cubes, that I had manufactured myself. The blocks and cubes provide very different effects – the cubes present as wireframe “drawings”, while the blocks’ side edges present as solid.

To ensure there is always a shadow cast, this clip uses five days’ of footage, superimposed using the “overlay” blending mode. This creates a fairly continuous flickering, as the sunlight, and thereby the block/cube shadows, disappears intermittently on each of the five layers.

These are the cyanotype prints for which I had already used the solid acrylic blocks.