11.7 Printing problems

11.7.1 ABS models tear up from the glass when printing

The most often reason for this issue is too low temperature of the heatbed. If you print a larger object you need to raise the temperature to 105-115 °C. The larger the area and the object height, the greater the temperature has to be. Also check the heatbed is calibrated and the glass is prepared properly as described in chapter Glass preparation.

11.7.2 Layers break and split when printing from ABS material

ABS material has a higher thermal expansion than other materials. We suggest other materials as PET, HIPS or PLA when you print larger models.

11.7.3 Models move the glass during the print

Glass is not fastened to the bed properly. Use more binder clips a print the object again.

11.7.4 Can’t load new filament into the extruder

Sometimes old filament does not unload properly from an extruder and new filament can’t load. You need to release the idler screws completely and open it. You can see the remnant of a black filament right under the hobbed pulley in the picture. Remove the filament carefully with tweezers.

Clogged PTF tube inside the extruder

11.7.5 Models contain either too much or not enough of the filament

You can manage the filament flow during the print. Use the LCD-knob and choose Tune - Flow - xx% where you can adjust the filament flow. Pronterface users can enter the value M221 Sxx into the command line.

When you change the filament flow next print will use the same settings unless you change it again in menu or you reset the printer or unplug it from the power source.