Technology

Stereo Lithography (SLA)TM is the most commonly used form of additive layering technologies  for Rapid Prototyping Invented by 3D  Systems in 1986, this company has developed the process to the very high level that the Viper machine is.

The Viper si2 SLA systems build superior parts with a smooth surface finish, high accuracy, and thin straight vertical walls. It is ideal for a wide range of applications, from rapid modelling and prototyping, to injection moulding fit and function testing.

Applications

• Small to medium sized concept and communications models

• Fit and function prototypes

• Patterns for investment casting

• Precision builds of extremely detailed parts

• Extrusion section sample lengths

• Die cast models

• EPS patterns

• RTV and PUR casting patterns & moulds

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Specifications

• Build envelope is 250 x 250 x 240mm
• Input datafile format .stl
• Part build layer thickness 0.06 to 0.15mm (0.1 standard)
• Resin density approx 1.2

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Process

A clean .stl file can be sent by either disc or email (usually zipped). This file is prepared for building in the Lightyear software system, by setting onto a support structure and slicing into layers from the base up. – Quotes can be obtained at this point.

The laser then builds these layers onto a perforated plate. The completed model is then removed from the plate, supports removed, surplus resin cleaned, and finish cured in a UV oven.

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