In Part 1, in the last issue, I discussed creating the pattern for a classic model. Part 2 follows on with the next step in production, which is - how to make the mould.

Having solid dies made is very costly, and only viable for large production runs of at least 5,000 units. For smaller production numbers, moulds made from Room Temperature Vulcanising (RTV) rubber (silicone) are the norm when casting in resin, pewter and white metal, which are the same materials that tin soldiers are made from. These types of moulds are also used for casting jewellery and similar items.

For all but the most complex of shapes, a two-part mould is sufficient; tha