I tend to use a mix of cuttlefish and delft clay for my casting, and usually it suits me just fine.

However lately I've been searching for different sized moulds for the delft clay, as opposed to the 50mm & 100mm aluminium rings that are commonly used.

Does anyone know where I can get hold of box shaped containers for instance, or should I be looking at making my own somehow?

I find the 50mm rings too small sometimes for my ideas, and Im loathed to spend the money on the larger ones as I think they're overpriced, so all ideas welcome please.

Cheers,

Nick