RE: Bad Vibrations
Question: factory assembled or did you put it together yourself?
Question two: do you have the accelerometer? That may help tune your specific printer…
If you got it prebuilt from the factory I’d be sending it back to them!
Last question, since I haven’t reread the entire thread, did you call them for technical support?
Mine is not noisy at all, aside from when the head is homing…
RE:
Hi there.
If you are asking me...
Question: factory assembled or did you put it together yourself? MK4S upgrade
Question two: do you have the accelerometer? That may help tune your specific printer… I did ordered one, so it should be here next week.
If you got it prebuilt from the factory I’d be sending it back to them!
Last question, since I haven’t reread the entire thread, did you call them for technical support? Yes I did
Today morning was like this on the back right side:
https://photos.app.goo.gl/hLHquSYFSqdEcfbc8
According to the suggestions made by support, this is the case across the entire plate:
https://photos.app.goo.gl/yFeb6aCodT4M2BZM9
RE: Bad Vibrations
I got a replacement set of linear bearing holders (L brackets) and it completely solved the noise for me, both the rattling and harsh resonance. The printer is 10x quieter than before.
I got a proper machinists square (only ~$15 on Amazon) to check - the original L brackets were both maybe 90.5, or 91 degrees; the new ones are exactly 90. During assembly I tried to eyeball the brackets on a countertop corner and obviously didn't see they problem.
I was able to get the printer belts to perfect Hz as well as -0.03 skew on Califlower v2 with the bent brackets; as far as I can tell, they were pushing slightly on the Y rods and these was causing most of the horrible noises.
If you're reading this thread and having this issue, I highly recommend getting a machinists square, take the brackets fully off and checking if they're square.
This has been quite an ordeal for me, replacing first the bearings, then a motor, before finally figuring out it was the brackets.
It's like a whole new printer now, dead quiet compared to before.
I got the XY axis motors from Prusa. I bought brand new LM10LUU linear bearings, Linear Rail Core XY, belt tensioners and replaced everything. I should add that I replaced the new parts with new ones! The machine made strange noises from the very beginning. Hours spent searching for a solution, hours with technical support, days spent dismantling, replacing and reassembling CoreOne. No one suggested that even!
I put CoreOne up for sale, but I would like to repair this piece of junk before I sell it. While waiting for parts, I had to buy a printer, and it turned out that it prints more than great, faster and compared to CoreOne, silently, so I am switching to a professional team after over 3 years with Prusa.
RE: Bad Vibrations
I got the XY axis motors from Prusa. I bought brand new LM10LUU linear bearings, Linear Rail Core XY, belt tensioners and replaced everything. I should add that I replaced the new parts with new ones! The machine made strange noises from the very beginning. Hours spent searching for a solution, hours with technical support, days spent dismantling, replacing and reassembling CoreOne. No one suggested that even!
I put CoreOne up for sale, but I would like to repair this piece of junk before I sell it. While waiting for parts, I had to buy a printer, and it turned out that it prints more than great, faster and compared to CoreOne, silently, so I am switching to a professional team after over 3 years with Prusa.
I upgraded from an MK4. I managed to get most of the vibrations dampened down but it was indeed annoying that it took me 7-8 weeks to get to that point. The printer is consistently reliable now except I have this mysterious condition where I'm have to readjust the belt tension once a week. It only takes a minute so not a time drain but it's another point of annoyance.
RE: Bad Vibrations
I had pretty intense vibrations (even the missuh complained that she never heard the old printers and this one is noisy!), I upgraded the table on which the machine sits to a very stable metal one with a 1inch solid wood top and all vibrations disappeared. The table is a rock, I am amazed by the difference, and the missuh is happy again 😀
For those interested in the table, this is the link to the german store I used: link to hornbach.de table
RE: Bad Vibrations
I made a project of special table and it was made at work! Special feet on it, it not a vibration. During printing, the machine itself makes noises as if something were loose inside, and everything starts halfway along the Y axis and back (red).
Everyone keeps saying the same things, no one mentions that such an expensive machine should at least be quiet. Mine makes a grinding and scratching noise, which is terribly frustrating when it's nearby. The Bambu H2D, on the other hand, could be in the room where I sleep while printing. Eight weeks and an additional €200 to achieve the same effect! Prusa knows about the vibrations, and I think everyone understands that they have released a product that should not be on sale.
https://photos.app.goo.gl/Ed3tUSXi8vY9LVRD8
https://photos.app.goo.gl/B8cFURSqPMpYXGWV8
https://photos.app.goo.gl/oncxguiAT5Ke5L6e6
Do you think that "special" table will reduce than? I don't 😀
2 days ago I heard from prusa support that they will be back in 24 hours ...
Technical support is nice, okay, but they're not technicians, just people working on scripts. A dozen or so times, I was given trivial suggestions, and what's more, they were the same every time. I did everything, checked everything before I even contacted technical support.
Tak powinna pracowac drukarka, reklamujaca sie jako profesjonalna:
https://photos.app.goo.gl/LYVFKhHVLpzPEoGMA
RE:
After phase stepper tuning, belt tuning, adjusting the bearings, my printer now only makes these resonance noises when printing perimeters on small curves. It's annoying but not continuous. I also ended up getting this 34kg shop table which has helped a lot: Stationary Shop Stand but then my friend's H2S is on a wobbly kitchen table and you can barely hear it.
RE: Bad Vibrations
I had to replace one of the big sliders as it would jam up (out of the box bad) and one of the motor nuts was jamming up as well but I still had one from the previous machine to replace it with. I could bet money that, had I installed any of those two, my machine would literally scream; there seem to be a QA problem in some of the parts sold by Prusa.
RE: Bad Vibrations
I am really glad that some of you, including you, are satisfied with this printer. After eight weeks of struggle, I have no more strength or desire. The replacement parts, which were new, had no effect.
What do you mean by "big slider"?
I replaced the following with new parts: XY axis motors, XY axis linear guides, both Y axis bearings – complete, not just the bearings. Several plastic XY axis components...
I have no idea what else could be causing this. I can hear the grinding noise from the other room.
My irritation grew over two months. And when I bought the H2D, it turned out that the Prusa CoreOne was an old Trabant standing next to a Lexus.
And thanks for all advices:)
I would love to sell it but don't want to have a pissed off buyer 😉
RE:
When I used my friend's H1S for a few hours and then came home to turn on my Core One, it was like I traded in my Tesla for a rusted out VW Kombi.
RE: Bad Vibrations
Well, I have to agree that the H2D is insanely nice. It's a much more mature product than the Core One. I do like my core one and it works well.
RE:
Hi,
I had similar noise in my CoreOne, kit version. It was very loud, and indeed, changing the printing speed to 90% or 110% changed the pitch and volume of the noise, but it didn't remove it, and it was still very loud. I contacted support, and they said they would investigate and come back to me once they know more.
This troubled me so much that I had to look more closely myself to see what was causing the issue. I noticed that even when the printer is turned off, when I move the extruder back and forth and side to side, I can easily replicate the vibration. I noticed that the vibration is linked to the XY-carriage / smooth rods, which cause the entire linear rail to vibrate and, in turn, the whole printer to vibrate badly. If I lifted / twisted the linear rail and moved it, the noise was gone. I thought that the issue might be with the LM10LUU linear bearing orientation / tolerance issue.
So, this is what I did next:
I moved the linear rail as far forward as possible, to the same position you put it in when aligning the CoreXY structure. Then, I loosened the screws holding the LM10LUU linear bearing on both sides. I moved the linear rail back and forth a little, then back to the front position, and tightened the screws again. Now, when I moved the rail back and forth, I immediately noticed that much less force was needed to move it, and the vibration was almost completely gone!
That slightly altered the belt tensions by a few Hz. I did the tensioning again and tried to print something, and I was really happy to find out that it's now so much quieter!
I hope this helps you guys, and let me know what you think and if it did help you!
When I experienced similar vibrations, I investigated the issue on the gantry. For me, the brackets with the hexagon pattern were causing the vibration. I loosened the brackets and linear rail, then retightened everything, which eliminated the vibration noise