I hope the attached image shows the problem. The filament used was standard PLA with default settings of nozzle temp=220C, Bed temp= 50C and print speed at maximum. The model was created in FreeCAD, exported as an .stl file and sliced with the default slicer in Creality Print app. I have tried varying a number of print parameters including print speed and nozzle temperature but the only thing that appears to improve matters, but not eliminate the stringing between the posts, is reducing the nozzle temperature down to 180C. A friend of mine has tried a similar model with different grades of PLA but to no effect. Any suggestions as to how I can eliminate this problem would be much appreciated.
Thanks for your response, Bonfireman. I keep my PLA in sealed, evacuated bags and my friend tried drying his PLA in a gentle oven but to no effect. Reducing the nozzle temperature affects the nature of the stringing, lower temperatures making it much less “blobby”, but does not cure it. Bit of a mystery really !
All my printers have dryers, I live in a very humid place, without them I would have more failures than good prints. I print directly from the dryers for optimum performance. Leave a roll of PETG for a week, put it in the dryer and see how much condensation comes off. If you have Orca try their temperature calibration and retraction tests.
Evacuated bags are good to have (I have some also), but they will only help once the filament has had the water removed.
Otherwise all the bag is doing is keeping the water IN the filament.
I dry my filament till I know the humidity is as low as I can get, then put it into vacuum bags with a couple of 50g silica gel bags, then suck the air out and put it away.
