Help with Belt Resonances

[unborn walrus]

Voron 2.4 300. A4T toolhead, nitehawk 36, cartographer probe, UHF

Using cartographer adxl. The nitehawk reports too high noise

[lucid moat]

👋

please ping me or reply to this message when u are ready

take your time, no rush

[unborn walrus]

Belt tension measured via spectrometer app included in mobilraker app

~110hz on both

[unborn walrus]

Ignore previous input shapers. Belts had some clear issues that are resolved now (tension was way off).

[unborn walrus]

I think I'm ready

[lucid moat]

u think 😄 ?

if u are not sure, read the guidelines again and compare what u posted

[unborn walrus]

Only thing that is missing is the voron cube, I noticed others didn't post that, if I need to I can print it

[lucid moat]

if its part of the guidelines, it must be posted 🙂 - talking about the cube according to the mentioned print settings

[unborn walrus]

Alright I will go about that then and get back

[lucid moat]

sounds good.
having a very close look at the 2 post i linked in the guidelines is also quite smart 🙂

[unborn walrus]

Last one I promise, found another small issue I resolved. Printing with these settings

[dreamy edge]

What does it look like with nh36 adxl?

[unborn walrus]

To hold the nh36 cable?

I was using a clothes hanger before and worked reasonably well

[dreamy edge]

Yes, and to help with resonance

Zip ties are cheap

[unborn walrus]

This guy yeah?

[lucid moat]

yes

[unborn walrus]

Yeah I will look at it

I'll go and do the testing on the nh36 in a few and come back

before it had way too high noise, couldn't even determine axes map.

But since then I noticed the top 2 a4t bolts had backed out, and fixed it so I will go back and try it

[dreamy edge]

axis map is in beta, it may not work right

[unborn walrus]

I will try both then just to see, but still do belts/shaper

And then voron cube print

[unborn walrus]

This is with the nitehawk enabled.

I do get a warning with the nitehawk of high noise of 900 or so

[dreamy edge]

Where was the warning?

[dreamy edge]

Looks good. May want to redo pa using the higher accel you are using for printing

[unborn walrus]

Came up in the console when I was doing the axes mapping, so I disregarded it. Also gravity was wrong by a little bit.

[unborn walrus]

Will do! Turns out I think I fixed the issues while collecting data, but I appreciate another set of eyes!

[dreamy edge]

What does the klipper accelerometer_query say

[unborn walrus]

Currently Mid print, but this is what came out accelerometer values (x, y, z): 1776.494261, -2145.067394, -11251.130318. Can definitely try static later

[unborn walrus]

accelerometer values (x, y, z): 2738.761985, -0.000000, -9696.697840 This is after print complete, printer static and hotend fan off

These are after printing and installing the galvanized wire holder (no wire yet, but bowden and umbilical tied together a bit.

[dreamy edge]

Don’t worry about frix’s axis map.

Your shapers look fine

You do not need the piano wire

Use ei shaper for x and y graph, input the corresponding values into printer.cfg and run vibrations profile

[lucid moat]

@dreamy edge do we want @unborn walrus to set accel per herz to 100?
Its at 60, which seems low

[dreamy edge]

Before sweeping 75 was default, klipper changed to 60 with sweeping. I use 100.
The value is a tradeoff between having enough energy in the system to get a good value, and not going to high that you drown everything out

For them 60 looks good

But @unborn walrus try running at 100 accel_per_hz and see what it says

[unborn walrus]

Also should I be doing sweeping on this or no sweeping? Have gotten conflicting info in the past and the above was no sweeping

[dreamy edge]

non-sweeping. Pulse only is what you want

[unborn walrus]

Ok cool I'll run that at some point today during lunch and see what we got

[unborn walrus]

This is at 100accel per hz

[unborn walrus]

Question for future reference, why EI over MZV recommended?

[dreamy edge]

I like 0 vibrations remaining (vibr%). Since shaketune feeds damping ratio back into the shaper calculations you do not get 0 vibr on mzv.
Frix states anything less than 5% should be good, but I like 0

[unborn walrus]

Got it!

Vibrations profile incoming, do you want with the one done at 60 hz per accel or the one at 100 hz per accel?

or both?

[dreamy edge]

I would say 60hz was working for you, set it back and leave it

[unborn walrus]

Ok! Vibrations profile incoming

This was at the 60hz profile EI shaper above

[dreamy edge]

install TMC autotune
https://github.com/andrewmcgr/klipper_tmc_autotune
and rerun

[unborn walrus]

No special autotune settings right? Just the standard? Already made sure the motors match with mine (exactly matches the documentation based on what I have in my 2.4)

[dreamy edge]

no special settings

[dreamy edge]

which shaper for y did you go with, and what accel

[unborn walrus]

Is there somewhere I need to be setting x and y accel separately?

[dreamy edge]

nope

try int/ext accel of 4500 with int/ext perimeter speed of 110-125mm/s

print a voron cube

3 perimeters/bottom 0 top/infill

[unborn walrus]

Ok

[unborn walrus]

Is there a guide anywhere to reading the vibrations profile? The documentation is either not enough or over my head.

[unborn walrus]

First layer squish a little high

[lucid moat]

Click on Reths profile here and u will find his youtube channel

As well as GitHub

[lucid moat]

What filament is this?

CF/GF?

[unborn walrus]

PA6-CF

Out of curiosity I did a vibrations profile with the cartographers onboard adxl vs the toolhead board, results below, unclear if it means anything

[lucid moat]

Thats not useful for us unfortunately

CF and GF hide ringing

Also your filament is wet

[unborn walrus]

Dried for 36 hours at 90C. But can go back and dry it again, what works best? Have a range of filaments available

Any paticular color as well?

[dreamy edge]

Grey works

[unborn walrus]

I have blue, does that work? Also white and black, and yellow. All ABS.

[dreamy edge]

blue is good

[unborn walrus]

Ok thanks

I'll get on it!

[plucky night]

@unborn walrus you are in good hands

[dreamy edge]

Slight vfa on the x, try 150 mm/s

Int/ext perimeter and turn off auto slowdown and auto cooling

[unborn walrus]

For auto-cooling do you mean just set cooling to one value?

[dreamy edge]

Yes cooling at one value and always on

[unborn walrus]

Alright I set it to 50% at all times. Reprinting

[unborn walrus]

Line across the top is from the ring in the center failing at the top

Hard to capture in pictures (I'm printing a cube spy now.) but to my eye significantly better vfa on X

[dreamy edge]

Nevermind read ring as ringing

[plucky night]

Yeah, I'm thinking that might be step over causing an extrusion issue

[unborn walrus]

On that, I think the gap there has more to do with the catastrophic failure of that center ring. Regardless reprinting at 135.

[unborn walrus]

New cube at 135

[lucid moat]

looks pretty good

i would say u are good to go

u have to tune PA but thats something for #slicers_and_print_help

keep in mind, as the name of the channel states #1308016330326413393 , we focus on basic help here.