Italian 3D printer manufacturer SISMA has introduced two DLP systems: the Everes Zero and Everes Uno. Expected for commercial release in the second quarter of 2019, the 3D printers were first exhibited to the public at Formnext 2018 and are designed for increased automation.
SISMA metal 3D printing
Established in 1961, SISMA is a producer and developer of high precision machinery and laser systems. Traditionally, the company developed metal cutting and welding systems to create personalized products for its customers in the jewelry sector. One of its specialisms is a line of over 130 automatic chain making machines, used for processing different shaped gold links.
In 3D printing, the company caters for both stereolithography (SLA) and laser metal fusion (LMF) technologies including the MySint100 machine.
Everes Zero and Everes Uno technical specifications
The Everes Zero and Everes Uno are high-resolution 3D printers fitted with full HD projectors operating at 1920 x 1080 resolution. Both systems print with a layer thickness between 10 μm-200 μm, and offer a maximum print speed of up to 6 cm per minute. A UV light source set to 405 nanometer wavelength cures the liquid resin.
The main difference between the two systems is build size. The Everes Zero operates an envelope of 9.6 cm x 5.4 cm (X x Y), whereas the Uno has a build of 12.48 cm x 7.02 cm (X x Y).
Zero Tilting Technology
Both Everes printers use a fixed vat, and a method termed Zero Tilting Technology (ZTT) ensures that parts are not pulled away from the vat when printing. In ZTT the glass affixed to the vat tilts gradually between layers, separating the first printed layer from the bed. This avoids suction between the object and the print bed, reducing the amount of process-related mechanical stresses on the model, and promoting better layer adhesion throughout the part.
In terms of increased automation, both the Everes systems have functionalities to keep them running with minimum manual handling. The 3D printers use cartridges for materials with smart barcodes known as RFID tags. These cartridges are loaded and unloaded automatically at the beginning and end of the printing process. Furthermore, the build platform has automatic alignment, removing the need for manual calibration.
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Featured image shows the Everes Zero by SISMA. Image via SISMA
