Design Considerations

Special Features

Soluble Cores

Complex internal features such as swept bends can be formed by the use of soluble cores (orange wax). Tolerances however may require relaxing.

Wax Assembly

Tooling for a complex component can sometimes be simplified by joining two or more patterns together at the wax stage. This enables the requirement for brazing after casting to be eliminated.

Cast Gears and Teeth

Components requiring teeth for gripping or gear applications may be impossible to produce by machining. The definition achieved by the Sylatech process is ideal for these applications.

Integrally cast rivets can be peened over to give an economic, strong and permanent joint.

Integrated Labelling

It is possible to include many types of permanent product identification which can eliminate further need for labelling. Logos and text may be produced with minimum cost if the design ensures that detail is in the line of draw of the wax from its die.

Ideally, cast labels should use raised lettering on the casting face (engraved into the wax tool). Where such information must be below a functional surface, it can be sited on a pad sunk into the cast face.

Preferred depth of engraving: 0.25mm - 0.5mm (0.010" - 0.020")

Types of Labels
Logos
Names
Numbers
Lettering
Direction
Instructions
Product ID
Part No.
Issue No.
ID for version traceability
Date code
Graduations
Raised pad for engraved serial no.
Label recess
metal casting widget showing raised lettering
Examples of support using a slot
metal casting widget with recessed label
Examples of support using a side hole
metal casting widget showing sunken issue number
This casting is a maze of holes. Its perfect surface is due to easy mould removal
metal casting widget with graduation markings
This casting is a maze of holes. Its perfect surface is due to easy mould removal
metal casting widget with sunken lettering
This casting is a maze of holes. Its perfect surface is due to easy mould removal
metal casting widget showing sunken pad lettering
This casting is a maze of holes. Its perfect surface is due to easy mould removal

Sylatech Design Guide

Design Guide v2
Download the Design Guide

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