I’m seeing this weird issue randomly where towards the middle/end of the print there will be these lines extruding off the sides, almost as if the head kept extruding while traveling.
On some figures this happened because the print was moved across the bed, while on a few others the print remained secured to the bed. If I remove the excess the print looks otherwise flawless and is not missing any layer lines. I also tried printing a simple part and this happened towards the end of printing, and a peice of the part seemed to have fallen off the print
This is happening on stock settings, both 0.08mm and 0.20mm presets.
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Welcome!
If you could find ways to repeat this with other models it could become a feature, the bristle look is quite nice.
Of course there has to be a reason for the failure, especially if the model was not moving on the plate.
Is there anything to see in the preview window of the slicer for those regions?
Can you upload an image of the model with the print side by side?
Yep thats exactly whats happening. I’m attempting to print a batch of 16 figures, each time it seems to fail at around the 90% mark on printing, which is right where the arms are started to be printed.
So far i’ve tried cleaning the print bed multiple times with dawn dish soap, trying both sides of the textured plate, increasing the brim size, printing with the top/door open or closed, increasing bed temp to 60-68c, disabling the aux fan, using only bambu filament, drying the filament, running filament calibration, running the printer’s factory calibration, and reverting bambu studio versions (issue started right around when the new update came out however this appears to be coincidental).
I’m really at a loss here. 2 weeks ago these were printing with no issues, now I cant print most things without the adhesion completely failing.
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If it is only the bed that troubles you try this way of cleaning and prepping it:
Put some hot water in the sink, add a bit of dishwashing liquid and put the plate in there for 10 or so minutes.
Lift it out and observe how the water runs off…
If CLEAN the water will quickly run off and leave little behind.
Little ‘rivers’ and a wet film left behind indicates there is something on the bed.
Use a soft sponge to rub over the plate and rinse often with the water in the sink.
Once the run off looks nice and even use a paper towel to hold it and another to dry it - you don’t want fingerprints…
Like this and with enough bed temp it is good for most NORMAL PLA prints.
But it is always advisable to clean the plate with some IPA or methylated spirit and a lint free cloth.
And to keep the bed in good shape and reduce the chance of accidental damage caused by too much adhesion : Add the liquid glue:
Smear a nice circle in the centre of the plate.
Once the tapping leaves a wet mark, smear it out until it looks dry and won’t go any further.
Now use a small, damp sponge to evenly spread it over the entire plate.
If it is too dry moisten a bit more but don’t soak the sponge.
Should leave a near invisible glue layer…
In case you print with PLA try a bed temp between 58 and 63 degrees Celsius.
For me around 65 the adhesion becomes too tough to peel off with ease once cooled down a bit.
These type of strings are extrusions that had been done mid air and then after get pasted onto the next part it travels to. This happens, like you already noticed, if parts become detached/moved out of place or sometimes got knocked over which can also be support structures. It sometimes helps to look at the nozzle path in the slicer preview to track down where the issue could have started
