Hot Melt Vinyl is a PVC moulding material which can be re-used many times. Available in two grades it provides an extremely cost effective alternative to more expensive materials, such as silicone and polyurethane and produces good results.
The advantage with Holt Melt Vinyl is that after the mould has been used it can be cut up and reheated and melted down again for use in another mould.
Hot Melt Vinyl has become very popular for use in creating wax models for use in the lost wax process for bronze casting and glass casting. It is also used when casting plaster and concrete.
Hot Melt Vinyl should be heated to between 130°C and 150°C.
There are two important points to remember when using Hot Melt Vinyl: 1, Efficient sealing of porous masters made from materials such as plaster, concrete & wood; and 2, heating and pouring of Hot Melt Vinyl at the specified temperatures, this stops air-bubbles, shrinkage of the mould and increases the number of possible re-melts.