CoreOne Printer Resonance Issue
I recently purchased the CoreOne printer, assembled it, and started printing. Compared to my previous MK3S, it was a marvel in terms of speed. However, at the highest settings, I noticed that the printer started to vibrate during flat prints. I have it set up in a living space on a sturdy shelf that is well anchored to the wall. Despite this, the printer still vibrated even with the shelf secured.
To address this, I bought vibration-damping pads designed for washing machines and placed the printer on them. This did reduce the vibrations but did not eliminate them entirely. I could still see the impact on print quality. Consequently, I lowered the printing speed to a BALANCED setting for finer details and to STRUCTURAL for other prints. While this improved the situation, I found myself questioning why I had invested in the CoreOne in the first place.
Friends from the Academy of Sciences – specifically from the Plasma Physics Institute – mentioned that they had placed their MK3S on a heavy concrete slab, which significantly improved their print quality. However, I really didn't want to place a concrete slab on a shelf in my room.
After searching for a solution, I realized there was space near the Z-axis motors in the printer. After some measuring, engineering work, and using a cutting tool, I cut two tiles from leftover artificial stone (2 cm thick) and placed them in the space around the motors, securing them with double-sided tape. The weight of these tiles is 8,200 grams, which increased the printer's weight by approximately 40% and significantly lowered its center of gravity.
This modification helped tremendously. I can now print again at the SPEED setting and cannot tell the difference between SPEED and BALANCED.
RE: CoreOne Printer Resonance Issue
This is an interesting case: I have a similar setup (very sturdy table with thick surface) and my printer doesn't vibrate at all (before on a reinforced ikea table it was shaking to the point of havig the table at risk of disintegration).
Your solution is pretty good if you want to hide the plate from view, it could become an option offered by Prusa: the custom-shaped hidden weight plate; concrete for the normal core one, hand carved marble for the oak edition 😀 😀
RE: CoreOne Printer Resonance Issue
I have a sensitive neighbor below me, and I needed to completely muffle the printer's noise.The first change, as discussed by CNC Kitchen, was the use of a concrete paving slab. The slab rests on an equally thick layer of rigid foam. Regarding the aesthetics on my desk, it's easy to cover the foam slab with an aesthetically pleasing covering, and the benefit for me is very noticeable.
The second change is the addition of HULA vibration-dampening feet ( https://www.printables.com/model/873633-hula-v10-anti-vibration-feet-for-prusa-mk34-core-o).
For me, they work effectively because the prints are quieter and just as (or perhaps even better) precise despite the sometimes high speeds.I've been using this system since April of this year.
And I achieved the desired effect – the printer only makes high-pitched sounds without Stealth mode; the low/rumbling sounds are gone. And these penetrate the walls most through the floor.