After months of my new printer printing without any issue, suddenly my prints are starting to detach from the plate half way through. Some of these pieces are printing for 8 hours, and only detach after 4 fours which just seems bizarre to me. For the latest print I took a time lapse, this was an 8 hour job. Can anyone give me any idea what would cause this to happen 4 hours in?? If they were going to detach I’d have thought they’d do it pretty early on in the print.
If you look at the video, you will see 3 pieces detach at various times. The strangest one if the last one right at the end, which mus be about 7 hours in. This last piece has been printed at least 6 times before with no issue, however, in the past all these pieces were on separate plates so they overall print time was lower.
I also cleaned the plate with soapy dish detergent per this print as per Bambu instructions as this was my longest print yet.
Why has this recently started and what causes this?
It would be more helpful to see what the model looked like in both preview and sliced mode.
But I’m willing to wager that if this started to occur just recently, then my number one question is: Did you verify the build plate cleanliness by performing a first layer test on the entire plate?
A first layer test will reveal a whole lot about your build surface.
Does this happen with all filaments or just one? What kind?
Other remedies:
Have you tried using brims?
Did you try to increase the temp of the build plate?
Sorry, the default setting for Vimeo was for video to be private, I’ve fixed that now so take another look and my q’s will make sense.
To answer your q’s
Not for everything - my point being is that it uses the defaults and these prints have already been printed multiple times before with no changes, so they should not failing even without brims because they worked in the past without brims
No
Yes
No - again, I’ve never done that, so it’s something recent.
Have you ever noticed that if you do longer prints if it’s more likely to maybe fail?
Maybe Ill do the layer test thing you mentioned, how do I do that?
thanks,
There are many first layer test models one can download off the internet but in the time it takes you download, you could already have been printing your own.
Start with a new project. Right-click and select Cube primitive.
Scale the cube primitive to a size you would like to test. The max build plate size I believe is 240x220. Make the size 240x220x0.28mm if you want to cover the whole plate. This assumes your at layer height of 0.28. Make it smaller if your at a lower layer height.
This will produce a single layer of filament. If there is any issues with your build surface, they will quickly show up. It may also show flow issues too(in the form of gaps) but that is secondary.
Here’s an example of a dirty plate first layer test.
In this example, I deliberately contaminated the surface of a smooth plate because it’s easier to see.
I just did a manual calibration in the Bambu Studio and this is how it printed. Not sure of the level height because it’s all automated. I read that this could be over extrusion for the top row??
Those a pretty rough my friend and I would consider none of the tiles acceptable.
You said you dried the filament.
Did you weigh it before and after? Otherwise, how do you know if moisture was present in the first place. All you know is that you had the filament in the dryer.
Did you run a temperature tower verify that the temperature you are running at agrees with what the world of physics produces in the real world?
You are correct in that there appears to be an extrusion issue. However, that can be also related to moisture and/or incorrect flow do to filament not reaching correct temps.
Did you run the first layer test? This will also show up filament flow problems near the edges and corners and is more accurate than the calibration tests in certain circumstances.
Thanks. I didn’t understand what the above test was. Some of them are meant to be bad, it’s from the printer calibration test, it over extrudes on purpose on top ones, that’s what the numbers are for. I realised afterwards lol.
I did the first layer print as you suggested for my enite plate, twice, with difference filaments. They came out perfect.
My theory is that when my printer is printing for a significant time it vibrates too much that the prints eventually come loose off the plate. I know that’s not normally an issue, but recently I moved the printer on top of a drawer. I think it rattles ever so slightly which makes the prints vibrate. I’ve put it back in the floor and so far so good. Will keep an eye on it. Thanks for your help Olias
Seeing one or two of these types of threads recently, I’ve been wondering if maybe a cold winter in the northern hemisphere could have anything to do with it. Was it in front of a cold window during the winter or something?
I had this problem for a short time recently, and it was probably from laziness of not cleaning the plate… but maybe a temperature issue?
Definitely not the cold, I’m in Australia and it’s red hot here at the moment lol. More likely humidity but my AMS says it’s level 1 in there so unlikely this also.
Well, I can say that I have those ‘anti-vibration’ mount things that they sell in the store. They cause the machine to go all over the place (but the sound in the downstairs room is quieter).
