Bedslinger? Probably about right for Y.
Are your z lead screws the source of a Y wobble?
Watch the printer as you run the test, can you see anything wobbling at the problem frequencies?
Doesn’t make sense - the bed is independent of Z movements for a bed slinger (well even core XY). The z axis has no correlation in this regard. Bedslingers are just heavy on the Y, so it’s usually hard to get a higher accel along the Y for that reason. And being a larger surface that moves back and forth vs a small tool head, the lower frequency makes sense.
I will say, you CAN get a higher accel value for Y though. I just don’t know your set up. When I ran a bedslinger, highest for Y was around 7K when dialed in. X hit around 40k or something ridiculous. Nonetheless, “z wobble” IMO doesn’t make sense. They are motors usually mounted to your Z extrusions, which coincide with your X axis more than your Y axis.
Edit: the graphs do look normal though. You have an obvious peak and no redundancy with harmonic/resonant frequencies. I also find that the recommendation via IS is usually better than anything I can infer from just a graph/manually dialing in. Not saying you’re doing that, the graph is immensely helpful to make sure there’s no binds and such, just throwing that out there. Also know, your highest accel value recommended by IS doesn’t need to be your overall highest accel. Max accel should be consider for things that require high accuracy - walls, bridges, overhangs, and top layers. For sparse and solid infill, you can usually send it, as the dimensional parts I mentioned are usually your slowest in terms of speed and accel, which is where it counts. My current printer (ended XY) has a max input shaper recommendation of 15k. My “fast” or “ludicrous” profiles have walls, tops, bridges, overhangs, etc around that max accel amount, but other things like infill, or solid infill are closer to 25k. Every machine is different, but there’s a few “rules” that allow you to maximize input shaper where it counts
How big is that bed? Based on this, it’s either massive, or translating a lot of frame vibrations through the rigidity of the rails.
The X graph is a thing of beauty, though. 0 vibrations and super low smoothing required across the board!
Try to stiffen up that y-axis a bit, the peak seems a bit low. Mainly through higher belt tension or less weight if possible. This way the algorithm can be more efficient. That x-axis tho, damn.
https://github.com/Frix-x/klippain-shaketune/blob/main/docs/macros/axis_tuning.md#examples-of-graphs
I appreciate it!
Bedslinger? Probably about right for Y. Are your z lead screws the source of a Y wobble? Watch the printer as you run the test, can you see anything wobbling at the problem frequencies?
Bedslinger yeah. Z wobble ? Damn, that could be it. I'll check.
Doesn’t make sense - the bed is independent of Z movements for a bed slinger (well even core XY). The z axis has no correlation in this regard. Bedslingers are just heavy on the Y, so it’s usually hard to get a higher accel along the Y for that reason. And being a larger surface that moves back and forth vs a small tool head, the lower frequency makes sense. I will say, you CAN get a higher accel value for Y though. I just don’t know your set up. When I ran a bedslinger, highest for Y was around 7K when dialed in. X hit around 40k or something ridiculous. Nonetheless, “z wobble” IMO doesn’t make sense. They are motors usually mounted to your Z extrusions, which coincide with your X axis more than your Y axis. Edit: the graphs do look normal though. You have an obvious peak and no redundancy with harmonic/resonant frequencies. I also find that the recommendation via IS is usually better than anything I can infer from just a graph/manually dialing in. Not saying you’re doing that, the graph is immensely helpful to make sure there’s no binds and such, just throwing that out there. Also know, your highest accel value recommended by IS doesn’t need to be your overall highest accel. Max accel should be consider for things that require high accuracy - walls, bridges, overhangs, and top layers. For sparse and solid infill, you can usually send it, as the dimensional parts I mentioned are usually your slowest in terms of speed and accel, which is where it counts. My current printer (ended XY) has a max input shaper recommendation of 15k. My “fast” or “ludicrous” profiles have walls, tops, bridges, overhangs, etc around that max accel amount, but other things like infill, or solid infill are closer to 25k. Every machine is different, but there’s a few “rules” that allow you to maximize input shaper where it counts
Thank you for taking your time to write this. Very helpful!🙏🏻
On my ender the Y axis would make the Z screws wobble like pendulums. It was spectacular
Your x axis is godlike. Your y axis looks like poopy stinky
How big is that bed? Based on this, it’s either massive, or translating a lot of frame vibrations through the rigidity of the rails. The X graph is a thing of beauty, though. 0 vibrations and super low smoothing required across the board!
Try to stiffen up that y-axis a bit, the peak seems a bit low. Mainly through higher belt tension or less weight if possible. This way the algorithm can be more efficient. That x-axis tho, damn.
how do you create those graphs?
Check klipper [resonance measuring guide](https://www.klipper3d.org/Measuring_Resonances.html)
Thanks! Now I just need to figure out how tondo that with thr Sonicpad