I assisting on a production of 'Calandar Girl's' and need advice to make a stacked drystone wall approx 3 feet high by 4 meters set in a rural setting. Thinking of using polystyrene carved with a blow torch but would like to know of other less messy methods. Wondering if paper mache is an option but given the height and size would prefer a quick method.
When working with polystyrene I was once advised to paint the darker colour first to ensure it gets into the gaps and overpaint in lighter colours. Interested to hear peoples experiences with polystyrene.