Sharebot Next Generation XXL+
user's manual
Downloading from internet
Internet offers many ready-made 3D models, but also in this case there are differences between the models that you “see fine” and those who “print well”. A good indicator
of the ability to print the file extension: the most popular 3D printing is STL (websites that intend to offer printable objects use this format). If there is no STL it is likely
that the intended use is different and the result on a 3D printer is not guaranteed.
From a 3D model to a printing file
The real “secret” of three-dimensional printing is the transformation of three-dimensional object into a sequence of two-dimensional slices that overlapped, reconstruct
the object. Imagine a series of slices of bread: If the stack rebuilt the loaf from which they were cut.
In the case of 3D printing every slice may consist of two-dimensional shapes not connected together as it is their sum to create the finished object. Thanks to this
breakdown, the object can be complex as desired because the printer will draw with the plastic one layer after another overlapping it; a square or a doodle for the printer
have the same difficult.
The most important work the software makes is starting from the 3D model – usually a mesh of triangles in space called mesh – and transforms it into a sequence of
slices according to a number of parameters (slicing). In order that the process is completed correctly the mesh should be closed and not have triangles that are oriented
incorrectly confusing the “inside” and “outside”. It happens that some model is made to art: at this point or the software that does the slicing manages to repair the mesh or
the result of errors that will prevent the correct reproduction of the object.
A good STL, a good slicing, a good print
The STL file is the starting point for the entire procedure, so from the file should be removed anything you don’t want to print (hidden objects, etc.) . The 3D drawing must
be a solid and not a sum of single solids interpenetrate or adjacent. Similarly, the design must be as definite and precise as possible: the 3D objects must have an inside
and an outside well defined so that the surfaces perfectly match each other without leaving holes. Most 3D design software gives you the possibility to carry out an
analysis of borders to check for holes. The 3D drawing must be oriented in such a way as to have a face adjacent to the XY plane of your drawing software: in other words,
the design should not “float in a vacuum”, otherwise the machine will not print. If you’re working on a STL downloaded from internet or given to you by a client, there are
free software for checking and correction of STL as Netfabb.
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