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3DGence DOUBLE P255 | version 09.2018
IX DICTIONARY
ABS
(Acrylonitrile Butadiene Styrene)
–
one of the main, together with PLA, printing materials for 3D printers. Characterized
by high impact resistance, hardness and scratch resistance. Not resistant to UV radiation. It is soluble in acetone, which enables
post-processing of printouts using the acetone vaporizing method. The printouts made of ABS can be also glued using
ABS/acetone solution. ABS has considerable thermal shrinkage (up to 0.7%). A typical working temperature for printing with
ABS is within the range of 220-
250°C and about 100°C for the heatbed.
Adhesion
–
in the context of 3D printing, adhesion of printout to the printer's heatbed. Insufficient printout adhesion may
cause partial or complete separation of the printout from the heatbed during printing. The ceramic heatbed of 3DGence
DOUBLE P255 printer ensures good adhesion of basic printing materials. However, there is a wide range of commercially
available solutions improving adhesion of printout to heatbed for difficult-to-print materials. Grease and dirt on the heatbed
have detrimental impact on adhesion.
Autocalibration
–
the printer's ability to perform automated calibration of the heatbed. The purpose of this process is to
generate the map of curvature and irregularities of the heatbed and, by introducing dynamic corrections, ensure constant
height of the nozzle above the heatbed. This process usually takes from several to several dozen minutes and the user's
intervention is limited to starting the process by means of the proper command.
Autocompensation
–
consists in one-point measurement of the distance to the heatbed and determining the correct distance
to start work. This process takes place each time before printing. After setting the correct height above one point, the next
part of the printing process is performed taking into account the heatbed curvature pattern saved in the printer memory
–
thanks to this, the distance between the nozzle and the heatbed is always the same and corrected on an ongoing basis along
the Z axis.
Bridge
–
a part of the model printed in the air, suspended between two parts of the printout. The bridge is calculated in a
special way when preparing the file for printing. If the bridge is too long, it may get deformed. In such cases, such printout
element should be supported with support structures.
Brim
–
one of the methods of improving the adhesion of printouts to the heatbed. It consists in enlarging the adhesion surface
of the printout to the heatbed by generating additional external outlines of the model proper at the level of the first printout
layer. The more outline lines are added, the larger the adhesion surface will be. Usually, from 5 to 20 additional outlines (brim
lines) are used. The brim should be used in the case of problems with separating the printout from the heatbed.
CAD (Computer Aided Design)
–
collective name of various computer-aided design processes. The CAD methodology is used,
among others, in mechanical, electrical, medical and architectural engineering. The CAD methodology is based on geometrical
modelling aimed at creating a two- or three-dimensional representation of the element being designed. Multiple CAD software
packages are available, tailored to the needs and requirements of the user. Models in STL or OBJ formats are exported from
these programs for the needs of 3D printing. The most popular CAD programs are: SolidWorks, Inventor, PTC Creo, CATIA,
Rhino, SolidEdge
–
however, there are many other programs available.
Curling
–
negative phenomenon occurring during FFF 3D printing. Curling can be most often noticed when printing overhangs
or sharply bent model elements. This consists in curling the printout corners up. In extreme cases, it may lead to printing failure
and always adversely affects the appearance, especially of the bottom printout surfaces. It also leads to collisions of the working
hotend with the printout. The basic method of preventing the curling phenomenon is active cooling of the printout. If activation
of cooling fans does not help, it is worthy to reduce printing speed.
