Frequently Asked Questions

for parts that tend to warp. For this reason, many users prefer to
disable any external cooling fans entirely when printing with
materials such as ABS. This allows all of the layers to stay warm
for a longer period of time, increasing your chance of success. You
can verify your fan speed settings by clicking on the Cooling tab
of your process settings in Simplify3D.
(3) Use a Heated Enclosure
While a heated bed can keep the bottom layers of your part
warm, it may struggle to keep the upper layers of the part from
contracting once you start printing taller and taller objects. In this
situation, you may find it useful to place your printer inside of an
enclosure that can help regulate the temperature of the entire build
volume. Some machines may already include an external
enclosure specifically for this reason. If your machine does include
a heated enclosure, make sure to keep the doors closed during the
print, which will keep the heat from escaping.
(4) Brims and Rafts
If you have already tried all of the other suggestions, but your
parts are still curling later on in the print, then you can also try
including a brim or a raft with your print. These features will help
hold the edges down and may warp less, since they are typically
only a few layers tall. If you want to learn more about these
options, please read our tutorial on Rafts, Skirts and Brims.