Moulding latex is a prevulcanised natural rubber solution having approximately 60% dry rubber content.
Ideal for flexible one-piece moulds, from cold setting resin and Plaster of Paris originals.
Plaster models: Immerse the model very slowly (to avoid air traps) into the liquid latex and suspend it there from 20 min to 3 hours depending on the thickness required. Remove coated model and allow to dry.
Other than Plaster Models: If necessary, seal the model with polyurethane varnish and allow to dry. Place item to be moulded on a tray or similar so that excess latex can be contained and returned to the bottle.
Paint latex onto the object one layer at a time allowing each coat to dry completely. Apply sufficient coats relative to the size of the object.
To Thicken Liquid Latex: For heavier moulds, the addition of standard wallpaper paste is suggested.
After applying several coats of unthickened latex, make up a quantity of wallpaper paste 3-4 times thicker than normal. By blending a small amount of this very thick paste with latex, very much higher viscosity latex is achieved which can then be applied to the model.
To ensure a strong mould: Allow to fully set and dry before use. The mould can be made stronger by heating in an oven slowly to 100°C for no more than 20 minutes. Allow to cool.
To Release Mould: Soap the outside of the mould (detergent + water) to act as a lubricant and peel the mould back over itself to release itself from the casting.
Avoid air bubbles when brushing latex.
Wash brushes and equipment in warm soapy water.
Avoid contact with petroleum solvents.
Use in a well-ventilated area.
Keep contents airtight for storage.
Store in a cool place.
Ideally use within 60 days of purchase.