Stringing is caused when the liquid filament oozes out of the nozzle during non-printing moves of the nozzle. A string usually starts where the nozzle leaves one printed section and can connect all the way to the nozzle starts printing the next section. Here are the main ways to reduce stringing of your prints:
- retraction settings
- material selection
Retraction is the first setting to change when trying to troubleshoot stringing in your prints. You can try to bump up your retraction distance and retraction speed.
Temperature is number 2 on the list of changes to make. Temperature affects the stringing because it affects how viscous the filament is at the end of the nozzle. The higher the temperature the easier the filament will flow through the nozzle and the more likely it will be to stick and string.
If you have done all you can with retraction and temperature your last option may be to change materials. Materials like PETG and Nylon are notorious for stringing. Even that same type of material like PETG can produce varying results depending on the manufacturer. So you can consider getting the material form an alternative source to see if that will fix your issue.
Retraction, Temperature and Material are the 3 changes mostly likely to improve your stringing. Between those 3 you should almost certainly be able to fix your stringing problem and get back to creating with your 3D printer.