Graphics Reference
In-Depth Information
quickly will prevent anything major. Printing
material and nozzle temperature will have
an effect on plastic droop during bridging.
Travel speed is the speed at which your ma-
chine will move between two extrusion
points. Since you'll never be extruding at this
time, you might as well crank up the speed
here as well. I'd recommend starting at 175
mm/s and moving up from there. Machines
that use a light Bowden extruder (like the
Ultimaker) can move as quickly as 300
mm/s.
If your extruder typically takes a few seconds
before the plastic appears, increase the
number of loops so it will make its way
around your part more than once. Typically,
the skirt is kept at one layer high, and any-
where from 3 to 10 mm away from the object
(see
Figure 5-11
).
First layer speed will modify how quickly
your machine prints the first layer. I'd start
with 50% and go from there. Read
the sec-
ond part of Rich's tutorial
on getting your first
layer to stick.
The Skirt
The skirt (
Figure 5-10
) is an outline around
the perimeter of your part, drawn by your
printer before it does anything else. This is a
great opportunity to “prime” your extruder,
make sure your nozzle's at a good height, and
kill the print before it gets too far if any ad-
justments are needed.
Figure 5-11.
The skirt
Support Material
Automatically generating support material
(
Figure 5-12
) during slicing will cause your
printer to print scaffolding under overhangs
and tough angles, giving you better overall
results once the support's pulled away. Just
check that box (
Figure 5-13
), and Slic3r will
do all the tough work for you.
Figure 5-10.
Configuring the skirt
