Glossary

Casting resins

Casting resins are synthetic liquid systems. Usually, two components – a resin and a hardener – are mixed together in a specific ratio and then react to become solid mass.

Casting resins for full or face casting

Full casting is suitable for very complex molds that would be uneconomical for use with lay-up techniques. It is quick and easy, and can be performed in just one working step. It is also very easy to make subsequent changes, since only one material is used. Full casting can be used for both small and large components, depending on the material chosen.

Face casting, in contrast, is suitable for dimensionally accurate replications as the reactive material is distributed in a layer, thus reducing shrinkage in the casting resin. Moreover, it offers a low-cost means of producing larger components, as it uses less casting resin. Through the selection of an appropriate casting resin, specific properties in the cured material can be achieved

RAKU® TOOL casting resins

The RAKU® TOOL product range offers casting resins based on polyurethane and epoxy. Example applications for RAKU® TOOL casting resins are:

  • Foundry models
  • Foundry pattern plates
  • Foundry core boxes
  • Molds and negatives
  • Master models and copy models
  • Components for small series, pre-production, and prototyping
  • Direct casting (negatives)
  • Jigs & fixtures
  • Electroplating bath models
  • Vacuum forming molds
  • Foaming tools
  • Metal forming dies
  • Form liners
  • Master molds for plaster molds in the ceramics industry
  • Concrete molds
  • Jigs

In addition to these casting resins, there are also fast cast resins that exhibit high strength, and boast rapid curing and short demold times.