Handy Hints

Plasti-Paste

Compared to GRP or plaster cases, PLASTI-PASTE is a very quick, light weight, labour saving method for making support cases. It is a polyurethane, fibre-filled material which is high strength and fast drying. It has a low odour, is non-shrinking and easy to use.

Forget polyester gel coat, polyester laminating resin and fibre glass. PLASTI-PASTE is an all-in-one product. To apply, you can use a brush or spatula. Once the required thickness is achieved, it can be smoothed with a brush and Acetone.

To apply PLASTI-PASTE it is important to stipple onto the object to be cased — this allows the product to flow onto the surface in a smooth manor and reduces the air entrapment as it is applied. It holds vertical surfaces well and is easily shaped to follow any contour.

PLASTI-PASTE is fast drying, but this is no disadvantage as it is possible to build on layers, and it will join to itself. Once one side of a case is complete, it is possible to remove any wall separation and after adding a release agent, to apply the second side of a case mould within one hour.

Low shrinkage means that any multi-part case mould will have engineering quality joints, and will be a better support to any rubber. It can be drilled and bolted together easily and is very strong once fully cured.

This hint appeared in our November 2005 Broadcast Newsletter.