3D printers. Characteristics

3D printers. Characteristics

1. 3D printers use two main technologies.

   • Powder bed fusion: The printers that use this technology compact masses of powder in layers.
   • Extrusion deposition: With this technology, the desired shape is crated by adding te material in layers. Printers that use this technique are more economical to buy and are widely used in education.

2. The main parts we find inside 3D printers are:

   • Electronics: It controls all the processes in the printer. They usually include an Arduino controller board and temperature sensors, a heated bed, power supply, display and card slot, among other components.
   • Mechanics: these parts include the moor and mechanisms that move the material and deposit it in the selected spot.
   • Extruder: the part that takes the filament from the coil and deposits the exact amount on the print bed. It has a hot-end, which is the part that melts the material. At the end of this hot-end is the nozzle ; the filament of melted plastic comes out of this. The size of the nozzle can range from 0.25 mm to 0.5 mm.

3. A 3D printer is a machine that can print figures with volume from a computer design. With the three dimensional printer( created 30 years ago), three dimensional objects can be created from digital data. In 2005, an open-source 3D printer was created that could print it’s own components. They were put at schools and households.