This clip was designed for my Prusa MK3S but can also be used for similar beds (4mm thick), so it might be helpful for you, guys! πͺ
Well, for different printers the position might change. In my case the shape doesn't change, only values changing a little bit. In any case to use or not - it's your decision βΊοΈ
That render is hella good
No, bro, not good :( I made a mistake with layers orientation + there's no threads+ PEI sheet isn't so good π But it took me 2 minutes to render and go to sleep ππ
Just say that you used support. All good now looks perfect. And no one cares about the other details but you itβs good :)
Ahahah well, even in this orientation it will work because of the compression of the layers, but I'm a kinda perfectionist πππ
What does it do?
For a modified Mk3 printer, you can place an accelerometer on the Y and X axes to fine-tune input shaping parameters when running Klipper firmware. Those parameters are used to allow the printer to run fast, quiet, and accurately by characterizing the resonant frequencies of the whole printer while the axes are in motion and then planning motions that minimize those resonant frequencies.
But this is actually more interesting for the Mk4 which has input shaping and a pin header to plug in an accelerometer from the factory. The default input shaper parameters on the Mk4 can not account for variations in belt tension, bearing wear, and changes to build plate or extruder mass so you need an accelerometer to account for those changes to get that last bit of performance out of the printer.
I used it for 1) Input shaping to find weird resonance frequencies. 2) To tune the TMC driver's parameters to run even more quietly and find resonance speeds to avoid them during printing.
Iβve also done 1, but how did you accomplish 2?
There are two ways - to use Autotune or to use Chopper Resonance Tuner. In the first one, you insert the parameters of motors from the datasheet, cross π€ the fingers and hope it will work as it should.
In the second case, it will do a test of every parameter of your drivers and build graphics. Then you'll need to choose the parameters that guarantee the lowest power consumption and noise for every axis. But attention - every test takes 2-4 hours per each axis. This test DOES NOT replace Input Shaping.
Awesome, thank you!
It's a 3-axis accelerometer.
And how does it help?
its for Input shaper.
for IS to Work correctly, you need to measure the vibrations of your machine. that is doing this.
you need to mount it in the Print head for x acceleration and ob the Print bed for y acceleration.
Specifically what it does for the printer.
For a Prusa printer, absolutely nothing. For a machine converted to use Klipper or Reprap, it lets you input a command to have the machine basically tune input shaping for you.
*for a stock prusa
mk3s can run kipper, and as someone pointed out mk4 can even use custom input shaping onthe default firmware although I'm not sure if it's been done yet.
lol
Do you know why you can google things? Because people aren't as lazy as you, and actually respond to questions that then show up on google.
Are those renders?
Yeah, I finished measurements late night yesterday and didn't have time to take photos
How did u render the 3d printed layer lines?
I use bump maps π€
I was told that's its best to test from the center of the bed. I printed one directly to the bed with a huge brim and kept the bed hot while i did the test. I got wildly different results doing it that way vs the edge mount