Tuesday, 3 November 2009

Moulds how-to



The cog needed to be cast on a curved plate as it had a curve at the edge of each rung. Clay was placed underneath the metal cog to a certain thickness then each groove was scrapped. This gave the cog more depth to create a thicker mould for a better slip cast. The plate is surrounded by rolled plastic which is secured at the base with clay. Also the inside edge is smoothed with clay to prevent spill. Plaster will be poured to about a 3rd of the depth of the rolled plastic.

No comments:

Post a Comment