Latex, is a natural air drying liquid rubber easily used to produce thin skinned, highly elastic moulds.
A former (original model) is simply dipped into the liquid latex.
A thin film of latex will cling to the former, and dipping is repeated until a skin of the required thickness is built up.. Immerse the former slowly in the latex, making sure the liquid flows in all dents and undercuts, then remove the former and allow to dry for a few minutes, then repeat the process five or six times to build up a significant thickness.
After dipping, the mould should be left to dry thoroughly before removing from the former.
Drying will take about 24 hours at 24oC, longer at lower temperatures.
Higher temperatures should not be used if over dried, the latex loses its elasticity.
Once dry, the mould should be rinsed in diluted washing- up liquid, then peeled from the former.
Before turning back the right way, dust the mould with talc.