Antero 800NA is a high-performance polymer with strong mechanical properties
along with exceptional material properties – such as temperature resistance,
chemical resistance, exceptional wear properties, and ultra-low outgassing –
making it ideal for low-volume, highly customized production parts and functional
prototypes that need to withstand more intemperate conditions. Antero 800NA’s
primary advantages over Stratasys’ high-performance materials – ULTEM 9085,
ULTEM 1010 and PPSF – are its high chemical resistance, low outgassing, and
wear properties.

System Overview and Compatibility
Antero 800NA is currently available on the Fortus 450mc with a 0.010 inch
(0.254mm) slice height. It uses a new support material, Antero 800NA Support,
which is a breakaway support system similar to the other Stratasys hightemperature
material offerings. This support material is however, easier to remove than the other breakaway support systems. Antero 800NA will require the hardened system upgrade and will utilize a custom T20D tip for the model material, an existing T16 tip for the support material, and a new purge ledge specific to Antero 800NA. Antero 800NA and Antero 800NA Support are available in standard 92.3 cubic inch, Fortus Plus canisters and the material will use the existing high-temperature material build sheets.

Part performance and quality are similar to ULTEM 9085 with the advantage of
increased chemical and wear resistance. No additional moisture or processing
requirements are needed to build using this material.

Part Design
Designing parts for Antero 800NA follows much of the same process for designing
other FDM parts and design for additive manufacturing guidelines should be
followed (e.g. utilizing self-supporting angles where possible, observing minimum
wall thicknesses, allowing proper clearance for assemblies). A general list of
design for additive manufacturing guidelines can be found in the Fused Deposition
Modeling (FDM) Design Guidelines document.

Unique to Antero 800NA and other high-performance FDM materials, is the
breakaway support system used to support the model material in areas of
overhang to prevent sagging. Although Antero 800NA Support is one of the
easiest supports to be removed by hand, the designer should take this into
account while designing the part. Self-supporting angles (angles greater than
45 degrees from the build platen) should be used whenever possible to eliminate
support material. Areas that require support must be accessible for removal.

Processing
The main consideration that should be taken into account during processing
is again support removal. In areas where support cannot be eliminated by part
design, the part must be orientated such that the support is accessible for
removal. Perforation layers can be added to the support structure to aid in
removal of large areas of support.

Default processing parameters should be used unless the user is sufficiently
advanced and has determined that the changed values produce better results
for a specific geometry.

Part Packing
Multiple Antero 800NA parts can be packed together in the same build. This often
reduces build time (due to elimination of tip swaps between model and support
for each part) and should be used to increase system utilization by eliminating
downtime when operators are not present (e.g. add another part to the pack such
that the build will finish in the morning, rather than at night or pack multiple parts
together for a longer build over the weekend).

For higher quality seams and a reduced potential for purge material in the part,
a sacrificial tower should be included in the pack, up to the full height of the parts
(under the Options > Sacrificial tower menu in Control Center and under Print
Settings > More Settings > Sacrificial Tower Type > Full Height).

System Preparation
The system should be prepared using the tips, build sheets, and with the hardened
system components as detailed in the system overview section of this document.
Before building parts, a tip calibration must be performed when switching
from another material to Antero 800NA, when replacing the tip at the end of its
recommended life, or any other time either the model or support tips are removed
from the head.

The tip life of the T20D Antero 800NA tip is four canisters of material. The user
will receive a warning after three canisters of material and will be prevented from
starting another build after four canisters of material without first changing the
tip. It should be noted that many short toolpaths are harder on the tip than longer
toolpaths. If building parts with many short toolpaths, it is recommended to
change the tip when the tip warning is displayed (after three canisters of material)
in order to not see a decrease in part quality.

Support Removal
Parts are easily removed from the build sheet by removing the build sheet from
the machine and flexing the sheet. Once parts are removed from the build sheet,
support material can be removed by breaking it off by hand, using a chisel or
scraper, using pliers, or by using various picks or other tools.

Post-Processing
Antero 800NA can be sanded, painted, media blasted, bonded, machined, drilled,
receive inserts, etc. similarly to other thermoplastics.

Annealing
Note: See the Antero 800NA and Antero 800NA Annealed data sheets for unannealed vs. annealed material properties.

The purpose of annealing is to use heat to alter the crystalline microstructure
of the material in order to augment properties such as strength, hardness, and
ductility. In some materials, it is also used to remove stress in a material by
relaxing the internal bond stresses.

The act of annealing consists of heating a material above its recrystallization
temperature (Tc), maintaining a suitable temperature for a suitable amount
of time, and then cooling. 

For more information on this best practice, download the complete user guide here.

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