Do the following if you have issues with stringing on prints

1. Clean the Nozzle

Clean the exterior of the nozzle with a fine wire brush then heat the end and wipe the nozzle with a damp cloth or alcohol wipe

2. Adjust the Retraction Distance

Strings are usually caused by excess material oozing out between movements. Increase the retraction distance in increments of .5 mm and try to see if there is a distance that works best. Retraction distance is typically between .5 and 2 mm for direct drive extruders and .5 to 15 mm for bowden extruders.

3. Adjust the Retraction Speed

Similarly, too high or too low of a retraction speed can cause stringing or delamination. Adjust retraction speed in increments of 10 mm/s and try to see if there is a speed that works best

4. Adjust Temperature

Ideal printing temperature can vary wildly between brands and types of filament. Print a temp tower to find the ideal temperature. An STL file and instructions for printing a temp tower can be found here.

 

Image from 3DBenchy via Flickr