Thinking about core samples / geology of the future. The first four cast experiments are really interesting. I like the effect achieved, which seems to leave some of the copper on the surface of the plastic. These are cast using recycled high density polyethylene pellets supplied by Biffa Polymers. Each is cast in a 25cm tall x 67mm diameter copper pipe. I’m expecting 75kg to arrive and will start producing batches.

HDPE Mix Cast Groups