Can someone please help and tell me why this is constantly happening with prints
the filament is new ( refil out the box fri ) bambulab pla basic blue grey ,
I always use flow calibration and the initial lines printed are always fine but by the time its traveled to a starting point it becomes very gloopy then very stringy to the point it looks like its dragging fluff around then it snags and drags the prints
This looks like a classic adhesion issue. There are too many posts here to go over it again so just do a search on “Layer adhesion” in quotes and you will find the troubleshooting measure to fix this.
In a nutshell, there are two main leading causes. Dirty build plate and incorrect bed temperature. In your case, I’m leaning towards incorrect bed temperature, because it looks like the entire first layer failed. This could an easy mistake due to having selected the incorrect build plate in your profile thus resulting in the wrong temp.
Dirty plate is easy. Dishwasher soap and hot water then a wipe with Isopropyl Alcohol(IPA) 99%. The latter is easier to find online, your local store likely only has 75%. 99% is free of any potential residues. Windex is another option but there have been reports that long term contact with ammonia on PEI will result in attacking the integrity of the PEI. That is a theory floated on another forum but I don’t know if I buy it.
Thanks
The bed plate is correct as per the model (textured, tested) the settings i tend to leave as is or as suggested by the slicer ,usually i find from using a different printer X1 - A1 P1 - A1 ,it will offer alternative settings which i usually take
the bed i have noticed is set at 65 currently while the nozzle is set at 220
but even when its set at 70 ive found it can do the same ,also i do use Isopropyl Alcohol* and have actually considered this as an issue
On a long shot. Do you have a non-contact IR thermometer to verify the build plate temp? I ask because one unlikely but plausible explanation could be a faulty temp sensor in the build plate.
This is a worthy item to have in your tool kit if you don’t already have one. They can be had for cheap. I have a couple kicking around the office because they are so useful for a variety of reasons. Amazon.com : inrared thermometer
Hi ,
No , as its suggested to always use dynamic flow calibration and bed leveling,
i do, (wiki) im new and learning, so i also find it better to get advice and i do have a basic understanding of filaments and moisture and other common issues ,ive also considered nozzle size using .4 to lay .2 , even though the slicer suggested using .4 it still shows as printing at .2 and if i told you its now printing just fine on its 4/5 attempt , its like the printers learning too.
Thanks for the suggestion i shall look into but there a couple of nozzles and filaments i shall be purchasing first
I had a terrible adhesion problems with my textured PEI - I scrubbed it with a clean sponge and a dishwasher and hot water, few times, making sure I do not touch its surface with my hands at any point. Used tons of paper towels in the process, but I am having a superb adhesion since then - before I couldnt finish a single print.
Its not so much adhesion as the way it strings and goes from a gloopy bubble to a fine fluff , with consequent layers snagging and pulling , at times if i stand over it i can sometimes be in a position to snip the gloops out other times its able to print over them ,
Alright, I thought this might be adhesion because for me - extruder would plop some filament on the table, and then grab the line and merrily jump around with loose filament all over the bed, causing stringing and wrecking havoc in the process.
i shall look into it thnx, but at the minute i wouldnt know where or how to start, besides which with bambu filaments they already have that info listed in the filaments menu ? and stored in the filament tags
I appreciate the thought and you taking the time
Its kinda weird that the only real print issues ive had (apart from one instance of greasy finger marks raising filament from the bed ) have been with this same print new and old ( first layer issues noted by other users too ) I have no interest in using other slicers why would i ? when
Bambu Studio is an open-source, cutting-edge, feature-rich slicing software. It contains project-based workflows, systematically optimized slicing algorithms, and an easy-to-use graphical interface, bringing users an incredibly smooth printing experience.
Bambu Studio is based on PrusaSlicer by PrusaResearch. PrusaSlicer is licensed under the GNU Affero General Public License, version 3. PrusaSlicer is owned by Prusa Research. PrusaSlicer is originally based on Slic3r by Alessandro Ranellucci.
im here to learn and ask for advice , im not looking to/for a promotion of other software , but thanks for your time . A little contradictory ? yes im aware
What type of filament are you using?
Its Bambu pla basic and it just doesnt want to print on my A1 while at the same time its printing almost 100% on my mini
Neither will the elegoo pla + i used to do the same print on the mini earlier
a couple things i would try would be. Drying out filament prior to using. Store any unused filament in your AMS or designated location with the relative humidity of the 20%. bumping up build plate temp (textured pei)…from 55 or 65°C for the first layer… trash that PLA basic and get some PLA matte or pla-cf because it looks and feals so much nicer (j/k).
I’m running on a X1C .4mm nozzle i only run flow line on spool changes occasionally, never on textured pei plate because the lidar doesn’t work on that plate. Bed leveling every now and then.
Do you notice better adhesion in the center of the plate versus the outskirts?
Hi
Moisture content was my initial thought too, but can it really be that intermittent to start as above but then end up printing near perfect parts ? like the images below show
This morning i did a little test and decided to do a print from the sd card
and this is how it turned out , i will add i removed and checked the nozzle too
I have also considered the lengh of ptf tube as i have the ams (which sits on top) but was ordered with the mini so they look a lttle short and wont fit with the corresponding ptf parts
but for me this appears to be more of a software issue , with settings the printer doesnt appear to understand , but thats just a guess based on some comments flying around
Parts look good now! Yes, moisture is a pain to deal with, but it can be the cause.
It doesnt explain why the filaments print on one but not the other (Mini - A1)
(see above) for clarity , it would print on the mini with two different filaments to a point with grey, when it did print on A1 it lost a couple of the parts , which in turn caused stringing from printing in the air , both prints on both machines having the same issue with the same parts ( greyl pla ), the black pla printing fine on the mini but not the A1
(desiccant holders) or why its printed so well from the sd card after being left on the spool over night .
- I also tried it with a non textured plate from an old printer it just left a stain *
I’m having similar problems.
Brand New A1.
My 1st print was the 14 minute Benchy off the card and it printed fine. I didn’t even clean the gold PEI plate before.
Everything I’ve sliced and tried to print since then has poor adhesion in spots.
I’m about to try something else off the card again.
I just printed the bed scraper included on the SD card. Printed flawlessly with the exact same filament that just failed on the 1st layer of the print before.
This is some kind of slicer software issue.