Frequently Asked Questions

vary depending on the material that you are using, so you may
want to experiment to see if different speeds decrease the amount
of stringing that you see.
(3) Temperature is too high
Once you have checked your retraction settings, the next
most common cause for excessive stringing is the extruder
temperature. If the temperature is too high, the plastic inside the
nozzle will become less viscous and will leak out of the nozzle
much more easily. However, if the temperature is too low, the
plastic will still be somewhat solid and will have difficulty
extruding from the nozzle. If you feel you have the correct
retraction settings, but you are still encountering these issues, try
decreasing your extruder temperature by 5-10 degrees. This can
have a significant impact on the final print quality. You can adjust
these settings by clicking “Edit Process Settings” and selecting the
Temperature tab. Select your extruder from the list on the left, and
then double-click on the temperature setpoint you wish to edit.
(4) Long movements over open spaces
As we discussed above, stringing occurs when the extruder is
moving between two different locations, and during that move,
plastic starts to ooze out of the nozzle. The length of this
movement can have a large impact on how much oozing takes
place. Short moves may be quick enough that the plastic does not
have time to ooze out of the nozzle. However, long movements are
much more likely to create strings. Thankfully, Simplify3D
includes an extremely useful feature that can help minimize the
length of these movements. The software is smart enough that it