General Operation With Ppsf; Removing Ppsf_S Supports - Stratasys FORTUS 360mc Manual

General Operation with PPSF

Only use the amber plastic build sheet when building with PPSF. Damage to
the modeler will occur if other build sheets are used. Only use a PPSF build
sheet ONCE.
PPSF build sheets take several minutes to become flexible enough to pull
vacuum. To help the sheet seal, lay the sheet down about 0.5 inches (12.7 mm)
away from the backstops. After the sheet becomes flexible, push the sheet
back so that it touches the backstops. You can also flip the sheet over after it
becomes flexible to help it seal. Always verify the seal by checking the
vacuum gauge before starting each part.
Some thin strands of filament on the model or support material is normal and
not harmful to a part. If the amount increases however, it may indicate that
you need to change the tip.
Auto Cool-Down incrementally cools down the oven to prevent PPSF parts
from cracking. We recommend that you use this temperature setting, which
you can set before building or while a job is paused. See "Oven Temperature
Control" on page 4-35 for more information.

Removing PPSF_S Supports

Warning: Always wear protective safety gloves when
removing support material.
Caution: Wear a safety apron when removing supports. A
heavy leather apron is recommended. It offers better
protection when working with sharp tools.
When removing supports, use a stable worktable that can handle parts
reaching 220° C (428° F). A hardwood worktable is recommended. Using a
steel top worktable will dull your tools. Plastic worktables may melt from the
high temperatures of PPSF parts.
Removing supports from PPSF parts requires a slightly different support
removal process than with ABS or PC, which uses BASS supports. With PPSF,
the interface layer of the support (the layer that contacts the part) can be
pulled or removed from the part easier if the part is hot; the heat makes it
flexible and less brittle.
Note: Remove the part from the PPSF build sheet as soon as
possible after removing it from the oven.
A-4
FORTUS 360mc/400mc and FDM 360mc/400mc User Guide