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# ISSUE DESCRIPTION CUSTOMER TROUBLESHOOTING STEPS
HW8 Parts are noticeably warped or
sagged during post curing.
1. Examine the parts after printing, cleaning, and post curing steps to
determine where problem is observed.
2. For minimizing post-curing warp or sag issues, strategies include:
a. For heated curing recipes, choose a Low Distortion recipe, which cures
for a longer time at a lower temperature to achieve the same mechanical
properties. Reducing curing temperature reduces warp; but reducing
temperature too much results in under curing. For applications where
maximizing mechanical properties is less important but minimizing
warp is critical, customizing a cure recipe to further reduce curing
temperature can be a good solution.
b. Material selection is an important factor. Some materials warp more
than others. If warp is a major problem, choosing a more rigid material
over a tougher material can noticeably reduce warp issues for some
applications.
c. Part design is a very important factor for warp. Thicker-walled parts tend
to warp more than thinner-walled parts.
d. Printing orientation is another important factor for warp. If parts can
be oriented to minimize the cross-sectional print area, the internal part
print stresses are reduced and warp during post curing can be reduced.
e. Part supports can help support features, or help hold parts true-to-form
during post curing. If long or thin part features are not well-supported
during post curing, features can sag with the heated cure. Curing parts
with some supports remaining can help support key part features and
reduce sag.
f. Curing on the print platform is a proven way to reduce warp. If supports
are sufficiently thick and short, they can hold the part during post curing
and ensure warp is minimized. However, parts will not fully cure in the
shadow of supports or on the bottom of parts. To fully cure parts, parts
must be removed from the build plate, supports must be removed,
and the part must be post cured a second time at a reduced curing
temperature. This method significantly reduces warp because the part is
held firm during the first cure. The part is much stronger at the start of
the second cure and resists warp much better.
g. Cleaning is a factor for warp. If parts are exposed to cleaning solvent
for a longer time, the parts tend to warp more. If parts are dried for
a shorter time, the parts tend to warp more. By using the minimum
cleaning time needed and by ensuring parts are well dried prior to post
curing, warp can be reduced for many applications.
The Post Cure 1050 has an automatic cooling time to bring the part and glass
temperature back down to a safe starting temperature. Removing parts from
the cure chamber prior to cooling may result in worse warp. Placing uncured
parts on hot glass will also result in worse warp. It is recommended to allow
the system to cool prior to removing parts or placing uncured parts in the
chamber. Cooling time can be adjusted to be longer or shorter, as needed, to
meet application requirements.
8.2 PostCure 1050 Network Issues
This page describes troubleshooting network issues with the PostCure 1050.
# ISSUE DESCRIPTION CUSTOMER TROUBLESHOOTING
STEPS
NI1 PostCure 1050 cannot connect to the
internet
Contact your network administrator.
The machine's IP address must be
added as an exception on your firewall.
You can find the machine's IP address
by going to the Settings tab on the
touch screen.
3D Systems, Inc. 60 p/n 40-D177, Rev. A