Slic3r in Depth
Support Material
Generally, most 3D models will print with overhanging parts by up to a
certain degree. The angle is determined by several factors, most notably
layer height and extrusion width, and is usually around 45
◦
. For models
with larger overhangs a support structure may have to be printed below it.
This incurs the use of more material, longer print times, and post printing
clean-up.
Figure 3.36: Support structure options.
The first thing to do is activate the support material option. Providing
a value of zero to the
Overhang threshold
parameter tells Slic3r to detect
places to provide support automatically, otherwise the degrees given will be
used. Support generation is a relatively complex topic, and there are several
aspects which determine the optimal support, it is strongly recommended to
set the threshold to zero and allow Slic3r to determine the support required.
Small models, and those with small footprints, can sometimes break or
detach from the bed. Therefore the
Enforce support
option will cause
support structures to be printed for the given number of layers, regardless
of the angle threshold value.
To demonstrate the infill patterns the minimug model was tilted by 45
◦
along the x axis, as shown in figure 3.37.
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