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Tooling
Signicast utilizes a system of tooling standards to ensure uniform high quality design
and fabrication of wax injection dies which are guaranteed for the life of the part.
Type of tooling in order of least expensive tooling, but highest piece price:
- Manual – Prototype or low volume production work.
- Semi-Automatic – Parts that are too large or fragile for fully automatic.
- Fully Automatic – Higher volume parts that can be ejected into a water bath.It is less labor intensive and increases productivity. More cavities means higher tooling cost, but also increases productivity.
Configurations that do not allow metal cores in tooling to be drawn due to undercuts
or complicated internal shapes must be treated in one of the following ways:
- Collapsible Cores – Lowest piece price, higher tooling cost.
- Loose Inserts – Best for low volume parts, not an option for fully automatic
tools. - Multi-Piece Wax Assemblies – Best for certain configurations, tolerance control
suffers along with increased part price. - Soluble Cores – Requires additional die for the soluble core and increased labor
for injection and removal of the soluble pattern. Provides excellent flexibility at
moderate additional cost. - Pre-Formed Ceramic Cores – High cost for specialized shapes. Used instead of
soluble pattern because coring would not be properly coated during shell
building process.
