The Process of Rapid Prototyping by Stereolithography
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The Process of Rapid Prototyping by Stereolithography
The Stereolithography process begins with a model obtained by CAD software (in this case, ARC+) or by digital acquisition of an existing object (for example, through reverse engineering).
Once a model is created (according to certain rules - see the section - Instructions for preparing an ARC+ model for stereolithography), it has to be exported to a standard format i.e. STL format (for StereoLithography). Today, this format is the de facto industrial standard. STL describes models in the form of adjacent triangular faces.
The STL file is transferred to the stereolithography apparatus, which has a control module of "programmable controller" or simply (and most commonly known as) PC.
The 3D model is then split into 2D cross sections of a fixed width. The width is set by the operator and determines the resolution of the restitution. This parameter thus controls the precision with which the object will be produced.
The object is produced.
In case of photopolymerization stereolithography (hardening the liquids by laser), the excess liquids are removed by spraying.
Related Topics
Instructions for Preparing an ARC+ Model for Stereolithography