Polyurethane vacuum cast components produced from Silicone Mould Tooling (SMT) are an economical way of producing production like parts for exhibitions, market research, batch prototyping, or in some instances, low-volume production.
The required surface finish for the parts is created by the master pattern used, typically an SLA model finished to the required specification, such as spark finish or gloss. An existing component can also be used as the master pattern.
Ivy Prototype has an extensive range of Vacuum Casting Resins designed to emulate most thermoplastics (eg PP, ABS) in look, feel, colour and physical properties such as high heat resistance, flame retardant (UL94 V0) and UV stability. This range allows us to closely match to your production intent materials.
Advantages of Vacuum Casting…
Typically 10-12 day delivery for first off parts
Tools then typically cycled 2 to 5 times per day, subject to size and complexity.
Tool life between 10 and 20 parts
Soft rubber materials through to rigid thermoplastic mimics
Colour matched to RAL, Pantone, NCS or supplied sample
Surface finish matched to VDI spark finish, Moldtech or supplied sample
Over moulding and insert moulding
Thick sections can affect part accuracy
High temp resins require additional post curing
Tolerances depend on geometry but typically ±0.2mm up to 100mm, ±0.2% over 100mm
Evidence of feeds, vents and split lines may be present – call us to discuss