Feature Description; Working Principle Of The 3D Printer - Renkforce RF2000 Operating Instructions Manual

5. Feature Description

• Printing space approx. 230 x 180 x 200 mm (D x W x H)
• Play-free profile rail guides and ball-threaded drives for maximum precision
• Automatic printing plate measurement
• Heating plate of glass ceramics
• 2 high-precision extruders with exchangeable printing nozzle for 2-coloured printing
• Integrated long-lived industrial mains unit
• Display and key pad for the device operation right at the device
• Control via a computer (USB) or stand-alone operation (with SD or SDHC card) possible
• Manual control of the printing parameters possible even during operation
• Extremely stable by aluminium/steel mechanics
• Suitable for all common standard roll filament types
• Breaking and abrasion-free cable guides across energy guide chains

6. Working Principle of the 3D Printer

For 3D print, first a file is needed that contains the three-dimensional data of the object to be printed (a common format of such a file is, e.g.,
a .stl-file).
This file can be produced with the corresponding software or with a 3D-scanner. There are also many printing files online that can be down-
loaded to print an object as quickly as possible.
The actual printer software has the task to render the above three-dimensional file into a file that the printer can print. This is a file in which the
individual print layers, the print temperatures for the two printing heads and heating bed, etc. are specified. The file has the extension ".gcode".
This G-CODE printing file is sent to the 3D printer either via the USB interface by the computer, or an SD card with the printing file is put into
the card reader and the 3D printer is used in standalone operation.
The 3D printer then prints the print file layer for layer according to the FFF (Fused Filament Fabrication) / FDM (Fused Deposition Modelling)
procedure.
While actually printing, the filament material is transported to the two print heads (extruders) separately from two filament rolls (bicoloured print-
ing). However, it is also possible to use only one print head (one-coloured printing).
In the extruders, the filament material is melted and then applied to the heating plate via a fine extruder nozzles layer by layer.
The heating plate moves in the Y and Z directions, the extruders move in the X-direction. Thus, all prerequisites to produce a three-dimensional
object by horizontal application of the present layers are created.
A 3D printer is a highly complex device in which many parameters must be set depending on the printer, printed object and
filament material used.
Additionally, the adhesion of the printed object on the printing plate is influenced by printing plate temperature, filament
material, shape of the printed object and surface properties of the printing plate.
Ambience influences such as drafts, grease on the printing plate, etc. also play a role in the quality and adhesion of the
printed object.
For the above reasons, it is not possible to achieve high-quality print results at once and without previous experiments.
Change the adjustable parameters in small steps to achieve the best printing results for your application. The printing
examples enclosed on the SD-card provide references, but must be refined for perfect results depending on the above
parameters.
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