Sharebot Next Generation XXL+
user's manual
Printing behaviour of PLA
This material, created by processing pulp plant waste rich in cellulose, is preferred by many compared to ABS, although more subject to high temperatures (over 70 ° tends
to become malleable). It's printed between 195 and 230 celsius degrees, depending on the additives that are added to color and change its physical and mechanical
properties. Compared to ABS is more environmentally friendly and does not emit smell during printing. The surface of the printed parts with PLA is more shiny and bright
while in terms of shrinkage we have very good behaviour also due to a lower extrusion temperature. Unfortunately, the range of temperatures in which the PLA remains
elastic is vast: Therefore, if the piece in print is not properly cooled, is likely to deform under its own weight or to be dragged from the extruder in the finer points.
It could have a shrinkage about 1% during printing, that has to be checked and limited on such a wide printing area. Using two strategies: heating the printing bed (80 °)
and an applying adhesive spray to the printing surface (hairspray).
So extract the printing glass, apply the hairspray supplied, put back in the printer the printing glass blocking in with the clips and launch the print. It is essential to spray
the lacquer only outside of the printer: apply the lacquer on the glass without removing it from the printer is bad for all mechanical movements and thus void the
warranty.
The heated bed
This is an option which improves the adhesion of the pieces on the printing plate and limit the shrinkage of the material, thanks to the heating of the plate at
temperatures in which PLA still has a certain plasticity and has not yet undergone a deformation due to the cooling to ambient temperature. If you plan to print parts of
some importance dimension this option is not only advisable but necessary: within the provided profiles (Slic3r and Simplify3D) is setted to 80°.
8 - Consideration about models orientations
The possibilities offered by your Sharebot XXL+ are many, but like all the technological tools, this must be understood and used by applying various parameters over time
increasingly sophisticated. If from one point of view, as 3D printer technology, promises to create any shape, from another one are frequent cases where a print could
finish with a big disappointment.
Sharebot srl
Nibionno Italy
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