Robox RBX01 - Page 119

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8.0 Supplementary Information
Surface Finish
This describes the quality of the outside surfaces of the part,
which can be aected by a wide range of factors.
Surface Model
Describes a type of 3D model which only contains surface
data in the form of a polygonal mesh. They do not have to be
‘manifold’ and can therefore cause issues with slicing if not
prepared correctly.
Thermoplastic
This is a type of polymer which soens on heating, allowing it to
be formed into a dierent shape. This diers from a thermoset
plastic, which is formed by a chemical reaction and does not
soen on heating, but will degrade.
Toolpath
This describes the motion that the printhead takes to produce
a layer written in GCode motion coordinates.
Transition Point
This term is used to describe the point at which the solid
filament becomes molten in the head assembly.
Underextrusion
A print defect characterised by a lack of material being
extruded, leading to surface finish errors and bad layer
bonding. It is usually caused when the extruder cannot force
filament into the ‘hot-end’ fast enough, due to blockage,
soened/wet filament, or incorrect material parameters.
Vapour Smoothing
This is a process used to smooth out the surface of a 3D printed
model by vaporising a solvent and then allowing to condense
on the surface of the model - causing partial melting and a
smoothing eect. See Section 6.3.
Viscosity
Viscosity is a property of fluids determining it's resistance to
flow. The higher the viscosity, the more diicult a material
will be to extrude or dispense (more energy/pressure will be
needed).
Warp
A print defect caused by uneven cooling of the part, particularly
severe in certain materials such as PP, HDPE and ABS. The
enclosed build chamber of Robox® is designed to help reduce
these eects, by causing the part to cool down uniformly at the
end of the print and reducing draughts.
‘Watertight’
See Manifold.
WPC
Wood Polymer Composite - a composite material produced
from wood ‘flour’ and a thermoplastic. Can be used for printing
‘wood like’ objects.