RE: CORE ONE vibrations
After slowing all perimeters down to same speed as external perimeters, The resonance/noise simply went away except for a barely perceptible resonance in the Y axis as the print head moves from the front to the back.
Should this be an accepted solution though? I would expect to be able to run the printer at full speed and have an increase is moving part volume, but not have unacceptable vibrational resonance which affects print quality.
RE: CORE ONE vibrations
Well said. Some "solutions" I've seen here and in other threads are just band-aids. In the meantime I'm waiting with bated breath for the next firmware upgrade to hopefully address this issue.
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/
RE: CORE ONE vibrations
Having to buy or source a concrete slab amongst other things, to aid, not fix, an issue that Prusa should of engineered out of the printer isn't/shouldn't a viable solution imo. Can you imagine if you had to do this with literally any other product you buy as a consumer, you'd be sending it back as unfit for purpose, but Prusa stalwarts will do nearly anything to make something work and Prusa needs to stop relying on customers to remedy issues that a multi million euro business can afford to fix, but also the customers need to stop, take a step back and wonder why they're doing it themselves, as in my eyes, they're only compounding/contributing to the problem.
Scott
RE: CORE ONE vibrations
Having to buy or source a concrete slab
A stone slab under a printer has always been a good idea.
Even back when printers were much slower and released much less energy. It always depends on where you place the printer.
RE: CORE ONE vibrations
Having to buy or source a concrete slab
A stone slab under a printer has always been a good idea.
Even back when printers were much slower and released much less energy. It always depends on where you place the printer.
But should it need to be? We've landed on the moon, but can't build a 3D printer that doesn't necessitate the need to have a 40kg slab to sit on?
RE:
Various videos on the new Bambu H2D point out that it comes with very effective anti-vibration feet. The videos show the whole machine shaking precariously, which looks a bit scary. But it seems that Bambu has chosen these relatively soft feet deliberately, hopefully after testing that the printer's frame is stiff enough to handle that shaking without creating artifacts in the prints. Decoupling from the table seems to be effective; the printer is described as being very quiet at any speed and no review has mentioned the need for an extra-sturdy support.
Maybe such soft feet are an alternative to paving slabs for the Core One as well. As a user, my gut response is to go with the massive support instead, to suppress all vibrations (of the printer and support) rather than allow some printer movement in a controlled way. But maybe the Core One would not mind some low-frequency shaking?
It would be nice if Prusa could do such tests and optimization, and ideally ship the printer with optimized feet right away.
RE: CORE ONE vibrations
Various videos on the new Bambu H2D point out that it comes with very effective anti-vibration feet. The videos show the whole machine shaking precariously, which looks a bit scary. But it seems that Bambu has chosen these relatively soft feet deliberately, hopefully after testing that the printer's frame is stiff enough to handle that shaking without creating artifacts in the prints. Decoupling from the table seems to be effective; the printer is described as being very quiet at any speed and no review has mentioned the need for an extra-sturdy support.
Maybe such soft feet are an alternative to paving slabs for the Core One as well. As a user, my gut response is to go with the massive support instead, to suppress all vibrations (of the printer and support) rather than allow some printer movement in a controlled way. But maybe the Core One would not mind some low-frequency shaking?
It would be nice if Prusa could do such tests and optimization, and ideally ship the printer with optimized feet right away.
Even the MK3S vibrated quite a bit, I printed squash ball feet underneath. The printer became much quieter, then the MK4 arrived and it also got the feet, it became quieter, it did not affect the print quality.Then I bought the accelerometer for the MK4S, I measured the same values with and without the squash ball feet.So I think the movement of the table or not does not affect the print quality, it is just much quieter.
RE: CORE ONE vibrations
Has anyone that purchased the the Accelerometer re-performed a Vibration test on his current CORE One final setup to recalculate the correct IS values ? 🙄
RE:
Has anyone that purchased the the Accelerometer re-performed a Vibration test on his current CORE One final setup to recalculate the correct IS values ? 🙄
Yes. It didn't improve anything as IS calibration has nothing to do with resonance frequencies on linear movements (constant speed).
RE: CORE ONE vibrations
I'm in agreement with you that this is not an acceptable end solution.
I simply noted what I observed in hopes the information would be helpful to the community. For now I will be slowing my prints down as the resonance noise is exceptionally irritating. My hopes and belief is Prusa is addressing the issue and I will be able to print at full speed eventually. For now most of my prints are in the hour range and the speed change barley changes the print time.
RE: CORE ONE vibrations
I also used the Accelerometer in hopes it would help the Resonance vibration. I did not notice any difference.
RE: CORE ONE vibrations
There are various video tests on feet on 3D printers.
They had no influence on the print quality.
The Bambula feet from the H2D were also available for retrofitting to X1C/P1s.
Opinions are divided. Some feel that the printer wobbles too much.
Such a stone plate is simply the cheapest and easiest method. A foam plate underneath.
Here is the Video from Makers Muse.