Polar Electro Polar3D, Manual, Page: 148 / 170

Glossary 139
Cartesian coordinates
Cartesian coordinates are rectilinear coordinates, describ-
ing the position of a point in two-dimensional space via
x
and y coordinates, or in three-dimensional space via x , y ,
and z coordinates. Cartesian coordinates are named after
the 17th century mathematician Ren´ e Descartes who devel-
oped them; compare with polar coordinates. See also polar
coordinates
combing
In the context of 3D printing, combing contrasts to per-
forming retraction and a Z hop: combing is when a non-
extrusion move is performed
without retracting the fila-
ment and without raising the print head, but ensuring that
the extruder only moves over extrusion areas of the prior
layer. With combing enabled, non-extrusion moves don’t
bother to lift up the filament but rather try to keep any
resulting “ooze” or smearing only over infill areas by con-
straining movement paths so as to avoid crossing over edges
(and hence unextruded areas) of the prior layer; movement
(without extrusion) takes the “long way round”, if neces-
sary, in order to stay inside the currently printed island of
extruded material. If printing via the Polar Cloud, see the
“
PRINT SETTINGS
”, “
ADVANCED
”, “
Enable Combing
” op-
tion. See also filament , infill , print head , retraction & Z
hop
cylindrical coordinates
Cylindrical coordinates are one way of extending polar co-
ordinates to three-dimensional space: cylindrical coordi-