In 3D printing, the extruder is responsible for feeding the filament to the hotend. A reliable transport is essential for good and consistent printing results. Even minor fluctuations can have significant adverse effects on the 3D-printed design. A precise and reliably working extruder is thus just as important as all other details of the beri-boy.
- For the beri-boy extruder, two driven conveyor cogwheels mesh with the filament from opposite sides, thus ensuring that multiple cogs mesh simultaneously at any given moment. This is particularly advantageous for softer materials.
- The filament is held more securely and the tendency to slip is reduced. The filament feed can take place using a greater force. This results in a safer and faster filament retraction.
- Since multiple cogs are engaged at all times, the pressing force of each cog must not be as high and less deformations and material displacements result at the filament.
- It is possible to employ differently designed cogwheels with different cog geometries (e.g. sawtooth shapes; different mesh angles for an individual cog, variable number of cogs, alternative materials, etc.). This enables a very fine tuning of the conveyor system to the filament.
- The penetration force (and thus the penetration depth) of the conveyor cogs can be adjusted, in a reproducible manner, between 0-100 N via the contact pressure (scaled system). Safe transport of different filament materials is thus possible without any complications.
Like all features of the beri-boy, the clear and robust design of the extruder meets all mechanical engineering demands. The integrated motor, which is used for filament transport, is of superior quality.