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Micro Modelling on the new
Envisiontec Perfactory System.
The Envisiontec Perfactory System has revolutionised the ability to produce very intricate highly accurate (Micro Modeling) prototype models. This unique system, which CRDM are now offering, builds in just 25 micron layers, leaving hardly any evidence of the layer construction, virtually eliminating post finishing. Furthermore, this system works like no other Rapid Prototyping system in the fact that it builds 'upside down'. The model leaves the resin tank as opposed to submerging in to it. This technique reduces the need for the hand removal of obtrusive build support structure (a major problem on very small parts), consequently maintaining component accuracy.
Available Envisiontec Resins from CRDM:-
E-Shell 100 – Water Resistant, Biocompatible, semi-flexible, Beige coloured.
PIC 100 – Investment castable pattern wax for fine metal casting
R11 Resin – General model material, Rigid, amber coloured.
This Envisiontec system uses light to cure a resin, similar to SLA modelling, not via a laser however, but by a standard light bulb. The Envisiontec Perfactory System uses an array of one million tiny mirrors which are independently controlled by a computer. When a mirror is positioned in such a way it reflects the light projected by the bulb on to the build platform, and set in another way it doesn't. In this way the machine generates what is effectively a jpeg mask of that particular stl. layer and when the light flashes the whole of the build area can be exposed, resulting in one layer being cured in one operation, rather than a single laser busily tracing around every aspect of the geometry.
This as you can imagine, increases the Z height build speed to a staggering 25mm per hour.
Industries that have taken to this process include miniature models, jewelry, and of course the medical sector, but the applications are endless.
How
the Envisiontec Prefactory System works (Micro Modelling) |
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