RE: Dampening the core one
Has anyone done a print quality comparison of Squash Balls/Hula feet vs standard?
RE: Dampening the core one
I printed the HULA feet and they work fantastically on the core one.
I also have the printer sitting on a 25 mm steel plate… which is also pretty helpful
RE: Dampening the core one
Has anyone done a print quality comparison of Squash Balls/Hula feet vs standard?
When I upgraded my last remaining Mk4S to a a Core One, I added Hula feet. They work, as in limiting transmission of vibrations to the workbench the printer is on. But I'm not super happy as the printer itself is now shaking a lot more, compared to the setup I have for all my other printers: Printer on custom rubber feet >concrete paver from Home Depot>sorbothane bumpers>workbench, which I've used for years. In all fairness, I can't say I'm seeing any difference in print quality, I'm just not a fan of the shaking.
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/
RE: Dampening the core one
After I installed the HULA feet I went ahead and recalibrated the printer.
From or this procedure I also used the accelerometer that I had to buy separately from Prusa.
printer works like a charm
RE: Dampening the core one
The reason I switched to the Hula feet was due to the printer shaking stuff off my table. Definitely don't see any difference print quality although my printer now shakes like a knackered clothes dryer.
RE: Dampening the core one
Yeah, it made a big difference with that as well.
the desk absolutely was shaking all over the place before I put the steel underneath of it and the new feet.
RE: Dampening the core one
In my thinking, any sort of flexible (rubber/neoprene/etc) feet is more of vibration isolation rather than dampening. Yes, different materials do have some dampening effects, but a little 2mm thick piece of rubber isn't absorbing much. It will keep the vibrations from moving to your desk, and will keep the printer from walking itself off the table.
I take more of a cue from the industrial CNC machines. There's a reason why those machines are built on huge multi ton iron castings, and then hard bolted to concrete. It's because the mass (especially cast iron) both absorbs vibrations and moves the resonant frequency so low that it's no longer an issue. This is why I've braced my Core One enclosure against the wall behind it. It's now rock solid. I wish I could quantify this with hard numbers and print quality metrics, but I notice it's both quieter and I feel like it's better quality. Also, I definitely have noticed that prints I needed a brim on will print without one now (before I braced, the whole printer shook enough to dislodge poorly adhered prints without a brim)
RE: Dampening the core one
... from the industrial CNC machines.
That's also my thinking. I'd expect the kinematics are difficult enough even if the "fixed" ends of the actuators are perfectly constrained. Allowing additional degrees of freedom would just muddle up things. But that thought may be academic with RepRap in the DNA, based on trial-and-error.