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Is a machine that can print figures with volume from a computer design. The technology used by domestic 3D printers is fused filament fabrication (FFF). In this technology, the material is added in layers to create the desired form The printers heat the plastic filament and push it through a small nozzle to expel a thread of plastic that builds layer after layer of a "sliced" drawing using a computer program for the printed object.

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Programs for the design of parts
Tinkercad. Online software that can be used free of change.

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Finally you have to send the GCODE format.
The GCODE file generated during slicing is copied to a memory card that is inserted in the 3D printer. Alternatively, we can use a cable to connect the computer to the printer and send the file this way.

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Tinkercad. Online software that can be used free of change.

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Then you have to send into a STL format to slicing.

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BlocksCAD. Online software that can be used free of change.

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Repetier-Host. The programm that we will use to control our 3D printer.

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Cura similar application  to Slic3r.

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Slic3r. One of the most popular free slicing programms.

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SketchUp. Free program for graphic design an 3D modelling.