Jesmonite

Jesmonite is a water based system with no harmful solvents. You can wash your brushes in water. It can even be applied directly to polystyrene. If using moulds, the lack of solvents means that they will last virtually indefinitely. Jesmonite AC300 and AC100 have Class O fire certificates so they are ideal for use in theatres and for theming applications. Work can be carried out almost anywhere as there are no requirements for expensive fume extraction systems. It has very little odour so staff and public can continue with little disruption. The products are supplied as a liquid and powder which are mixed in a ratio of 1 part liquid to 2.5 parts powder by weight using a high shear mixing blade in an electric drill at around 1000rpm for about 45 seconds. The resulting mix can be poured into a mould or it can be used to form a strong laminate. The mix can be stiffened for vertical surfaces with the addition of a little thixotrope or retarded by adding retarder. The products are supplied with full instructions.

How much will I need?
To estimate coverage, a 5mm thick laminated panel in Jesmonite will weigh about 8.725kgs per m2 when wet and 8.25kgs per m2 when dry. Therefore a 70kg kit will cover about 8m2

Safety Data:
Jesmonite Acrylic Composites are classified as low hazard materials with little or no toxicity. First time users should ask for safety data sheets.
Operatives should be provided with:
a) Eye protection: goggles or glasses
b) Dust masks
c) Hand protection: rubber gloves