3D Printing Industry | 1/7/2019 | Umair Iftikhar
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A Vermont-based large-format 3D printer and pellet technology specialist, Massive Dimension, has launched a pellet extruder for large-format 3D printing.

Filament-based 3D printers are restricted due to the limited amount of material they can extrude to build a model. Therefore, making large (or massive) objects can take a considerable amount of time. A pellet extruder bypasses the extrusion limit to 3D print large objects more efficiently.

MDPH2 - Pellet - Extruder - Dimension - Image

The MDPH2 pellet extruder by Massive Dimension. Image via Massive Dimension.

As more innovative uses of 3D printing in construction, architecture, and prototyping come forward, large-format 3D printing is becoming more relevant.

Printing - FDM/FFF - Methods - Models - Dimensions

Large-format 3D printing is an FDM/FFF methods used to fabricate models with dimensions ranging between a life-size prosthetic to a pedestrian bridge. Layer heights using a large-format 3D printer can range between 1mm-25mm because the focus of large-format 3D printing is the size and not resolution.

Thicker layer heights can reduce the printing time. However, in FDM/FF technology the extrusion rate is limited to due the filament filament feed system. A pellet extruder breaks through these limitations and can extrude high volumes of materials through the nozzle for 3D printing. Pellet feeding technology is also known as fused particle fabrication (FPF) or fused granular fabrication (FGF).

Color - ABS - Pellets - Image - CTM

Color ABS pellets. Image via CTM Projects.

Making the filament from recycled plastic requires melting...
(Excerpt) Read more at: 3D Printing Industry
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