I have some issues with a print on my A1.
I will start by saying that NO i didnt dry my filament, the dryer is on its way. I will say that this is PETG but ive seen this behaviour on PLA as well.
The print looks like is been ironed with the Iron through a cloth
Its not a quick print which is why I honestly dont wanna do again but i believe i have to.
There is some banding as well because of the arc fitting for some reason. The printer is screaming like crazy, but it might be the drawer its sitting on. Just retensioned the belts last night
Managed to put it back together, for now it looks ok. Funny thing is, testing is, well… nothing out of the ordinary. Spiral mode sounds just fine 100mm/s
No vfa or anything weird. Gonna retry the model…
Never mind The noise came back and the artefacts are still there… even worse this time
I will try to approach the Y axis assembly.
It’s funny because the model is rated five stars on maker world Here is the model
BambuLab reply to the noise ticket was:
Based on the video, noise only occurs at specific locations. Since most 3D models are composed of triangular faces, the arcs within the 3D model are converted into curves consisting of numerous short, straight-line segments in the STL file.When printing at high speeds, many transient pulse signals are generated at the corners of these line segments, resulting in noise and vibrations.However, this noise is unlikely to significantly affect the lifespan of the equipment, so you can disregard it or alleviate it by adjusting the arc fitting resolution.Bambu Studio supports G2/G3 arc motion, which generates arc motion paths within a specific tolerance range. Adjusting the resolution (precision) allows you to fit more arc sections and reduce the noise at certain arc positions.For more information on arc fitting, please refer to the tutorial below.Arc move | Bambu Lab Wiki
2. Kindly note that you can also manually push the heatbed and tool head to check if they produce any noise when moving separately.I hope my answer will help you with the problem you are experiencing.Please let me know if you have other questions or if I can assist you with anything else.We are here to help you!
Bambu Lab Customer Support
I would say the same thing. as you say it is not on other models.
Try isolating the problem. So maybe rotating the model on the build plate.
When printing a another round object in the same place does it yield the same sound.
Also clicking on the model there is a profile using fuzzy skin. when doing this the printer vibrates and creates a fuzzy skin. But when tinkering with the settings for example speeding up de fuzzy skin profile the printer wants to create the fuzzy skin but also keep the speed resulting in the rapid changing of the toolhead thus creating the sound
I tried rotating it to 90* i have the same issue in the same spot… better yet, followed @MalcTheOracle s advice and took a look at the Y-axis assembly and it looks brushed
No luck on the tolerance. I would need some small spacers to do that… basically lift the whole assembly with 1 mm. Might try it now that i think about it…
Sadly its a tedious job to take the X gantry down just to put it back up and test it. Lots of screws
But if it gets it done… worth it.
I will keep you posted of the results… it starts getting on my nerves as im stuck and cant print anything
The brushed bits are okay thats the way it comes out of the factory.
But you said that a spool fel down on the toolhead and bed.
zo maybe indeed the bracket holding the bed is bend out of shape.
Do you feel drag when manualy moving the bed over that spot.
A more easy way of looking at what is happening is to take the bed of,
you can do that
If you look at step 2 on this post it explains how you can remove the bed
Then when that is removed it is easer to see what is happening
Thats just the thing, i wasnt in the room when it happened. I just heard a bang and then found the spool on the floor. Toolhead works normally from what i can gather. But the one making the noise is the bed. I found that it jitters when i move it manually, even without the belts attached. Belts make it a bit worse.
Took it apart and raised with some spacers of 1mm printed on the A1 mini, but now it rocks on the far end of the course. Barely noticeable but you can feel it.
Bambu said its normal behaviour and did not address the brushing of the rail
Can you post a picture of the spacers u used.
Plastic being squishy it wil squish under the load of your hand.
The brushing looks completely normal look in this guide the brushing is also there or am I not seeing something?
This guide explains how to lubricate the Y-axis of the A1 series printers.
or you can also see the brushing on the YouTube video on the same page
Can you also post a image of the metal rail at the spot the carriage makes a sound. And can you also post a picture of the y carriage (the carriage the bed rides on)
I took the bed off at least five times now and put it back together I think I know how to lubricate it but thank you for the share.
Not trying to be a jerk, just a bit disappointed of BambuLab’s support.
As for the spacers, they are printed on the mini with 0.08 line and 2mm height. Designed in BS. A basic disc with a negative part for the hole.
Printed 4 so all bearings have the same fittings.
Honestly the noise dyed down so its not as noisy, so that would be a success on this journey.
One thing i missed out was turning on the fan for the PETG profile. It was sitting at 50%.
We’ll see the result in a few hours with the new settings of 100%
I managed to print the damn thing… you’ll never guess what the issue was… besides the bed making the worst noise possible…
Fan profile was set to 50% max
I printed a part of it where the area was affected, on the A1 mini and printed perfectly while printing PLA on the A1 which was also perfect.
Turns out the PETG profile on the mini was tweeted to the best settings. All i had to do was replicate it on the A1… Lost two days of my life working on that thing… i can now open a service for A1
Nice dude
What a roller coaster it has bin.
I now realize that maybe my post may have bin a little misleading
but what I ment when inserting and revering to the community post is that you would have a reverence on how the carriage looked like.
and if anything is out of the ordinaries.
In this case, you would’ve been totally right to think that the beam is not oiled because of the VFA that appeared on the object’s margins.
I would describe it now as soft plastic with the nozzle just drags on it making ripples, like tires in the mud, resulting the most gruesome sound that the 3D printer can make.
Because of the spool incident, It didn’t even cross my mind that it would be filament or filament settings. And the fact that only you and @MalcTheOracle commented and gave suggestions, with BambuLab ticket answer being “ its just fine” let me to believe that I have to pull out a rabbit out of the hat to make it work🤣
So thank you for your comments.
And thank God that I had another printer to test it on. If it wasn’t for the mini, I wouldn’t be able to figure it out probably.
please
oh boy…
but thank you for the share.