LDO Trident Ghosting Help

[abstract slate]

• Printer: LDO Trident REV C
• Relavant mods: CNC TAP by LDO
• Which ADXL was used: (adxl345)
• I am measuring absolute belt tension by feel

Here is my speed settings in Orca Slicer:

Here is my printed Voron Cube with specify settings:

Here is my front Idler and XY joints:

[coarse hamlet]

Thanks for all your Information amd reading the guidelines

A few things i would request:

• the ADXL is not installed correct. Check the stealthburner CAD to see how it should be mounted
• install and use Shaketune

[frank sundial]

https://github.com/Frix-x/klippain-shaketune

[coarse hamlet]

Great pictures, thanks.

Regarding your XY joints, adjust the screws according to the attached image

[coarse hamlet]

TAP - 2 or 4 magnets?

[abstract slate]

Only 2 magnets

[coarse hamlet]

Once shaktune is installed please run belt compare as well as axes shaper calibration

Post the 3 picture here

[abstract slate]

@coarse hamlet front idler should have some room like this right ?

[coarse hamlet]

XY adjustment looks good. well done 🙂
movement in video is fine

[coarse hamlet]

careful, those are not front idlers

leave everything as is. continue with the rest i mentioned 🙂

[abstract slate]

[resonance_tester]
accel_chip: adxl345
probe_points:
    125, 125, 20
accel_per_hz: 100
sweeping_accel: 400
sweeping_period: 0

@coarse hamlet Do you know the probe_points off_set to make the ADXL actually in the center of the bed ?

[coarse hamlet]

well, the middle of your bed 😄

just adjust the points to be the middle

[abstract slate]

I mean because the ADXL is on the left of the tool head shouldn't we make an offset to the right to make the probe in the middle instead of the nozzle ?

[coarse hamlet]

its fine, just enter the middle of the bed 🙂

as long as u have installed the ADXL now correctly, as shown in your screenshot, u are good to run shaketune

we are not doing rocket science here. the little offset wont affect the measurement

[abstract slate]

@coarse hamlet I should uncomment all parameter in [shaketune] right ?

[coarse hamlet]

no

they are optional

just [shaketune] and done

[abstract slate]

ah ok

@coarse hamlet What Shake&Tune command do you want me to run, maybe all of them ?

[coarse hamlet]

i already told you 🙂

[abstract slate]

oh damn my bad

[abstract slate]

@coarse hamlet The output folder of Shaketune is not tmp right ?

wait no I have found by following the video

@coarse hamlet Here is the graph generated by ShakeTune

[coarse hamlet]

get yourself the tension meter https://github.com/Diyshift/3D-Printer/tree/main/GT2 Belt Tension Meter

unfortunately u did not click on your flag in #rules , so i can not recommend a local vendor for it

[coarse hamlet]

also why did u run axes map? i didnt mention it 😄

[coarse hamlet]

post a picture of each motor pulley please, so we can see how the belt runs on it

[abstract slate]

You mean the the front of the AB block right ?

[coarse hamlet]

yea

[coarse hamlet]

adjust the pulleys so the belt runs perfectly in the middle

[abstract slate]

@coarse hamlet I have adjust the pulleys to the best of my ability. On the right the belt is always in the middle but on the left the belts goes up and down a little bit.

[coarse hamlet]

it should run in the middle. its 100% doable

we dont want the belt to run on the top or bottom touching the non-geared part

[abstract slate]

I have make sure that there will always be a gap between the belt and the non-geared part even tho it is going up and down

[coarse hamlet]

ok lets do one thing at a time.
start by clicking on your flag in #rules

[abstract slate]

Ah yes I have already ordered a kit from from West3D.

[coarse hamlet]

ok. next: record a video of the belt u are talking about which can not allign properly
ensure good camera focus and lighting before uploading

[coarse hamlet]

video is good, ty
its very tight but there is space at the top from what i can see.

next: check that your chain screws are tight.
at the toolhead
at the X axis
at the Y axis

[abstract slate]

I can confirm that it is tight. I think we should call it for today as my library is closing soon. Thank you for todays help

[primal estuary]

What is your belt tension at?

Damn @coarse hamlet got everything covered

[coarse hamlet]

https://tenor.com/view/typing-cat-typing-wfh-work-quick-type-gif-6993997855374677613

[primal estuary]

I think tension might be low

[abstract slate]

https://biqu.equipment/products/biqu-belter-high-precision-belt-tension-tool

would you guys recommend this ?

[primal estuary]

Nope

Current recommendation is pf makes tension tool

[coarse hamlet]

100% what reth said. Do not buy that one

[abstract slate]

@coarse hamlet @primal estuary I am back at my printer. What step would you guys recommend me to do next before my belt meter arrive.

[coarse hamlet]

Enjoy printing till it arrives

[abstract slate]

oh ok

[abstract slate]

I will print the Belt Tension Meter STL and will note any ghosting for comparison.

[abstract slate]

@coarse hamlet @primal estuary My have assembled my belt meter and make sure that the reading on both belt side is 2.9. Do you guys want me to run shake tune again ?

[coarse hamlet]

2.9?

Where did u get that from

[abstract slate]

wait no 2.1 sorry

[coarse hamlet]

Please check again its 2.1

[primal estuary]

2.9 I was about to have a heart attack

[primal estuary]

looks good run belts

[primal estuary]

that is good enough

go ahead and run input shaper

[primal estuary]

I think your 75 hz on y is due to your cable chain.
Make sure you have two screws on each side of the cable chain, and the cable chain sits in the middle of the x-axis

also set SCV to 5 for testing purposes

rerun at scv=5

[abstract slate]

Can you teach me how I can do that ?

I can confirm the the chain in my X axis is secure. I even put double side tape to make the chain stick to the extrusion

[abstract slate]

[printer]
kinematics: corexy
max_velocity: 300  
max_accel: 3000             #Max 4000
max_z_velocity: 15          #Max 15 for 12V TMC Drivers, can increase for 24V
max_z_accel: 350
square_corner_velocity: 5.0

My scv is already at 5.0 ?

[primal estuary]

you see the extra wire you have coming out of the cable chain. That needs to be more inline. That may be pushing on the toolhead when you vibrate it

[primal estuary]

double check when you run the test that it is 5

May need to use the drop down arrow and manually set it

[abstract slate]

@primal estuary

[abstract slate]

Do you want me to add a top panel riser just to be sure ?

[primal estuary]

What is a top panel riser?

[primal estuary]

what I think is happening is your cable chain is moving because it is angled upward.

this is due to the design of the cable chain itself

what you can try to do is to put 1mm washers between the extrusion and the cable chain. I think there is a printed part to fix this but I do not know what it is called

[abstract slate]

Would you recommend the same on the tool head end of the chain also ?

[primal estuary]

Toolhead side should already be laying flat

[abstract slate]

@primal estuary I know that you guys discourage light weight x gantry mod but does that even include Carbon Fiber square tube version like this one ?

https://kb-3d.com/store/voron/6135-9328-carbonara-lightweight-carbon-fiber-x-beam-alternative-for-voron-monolith.html#/268-buildsizevrn-250mm

[primal estuary]

I have not used it. I cannot make a statement for or against.
I hear it is suppose to be an improvement, but I have no personal knowledge of it

[abstract slate]

You know what I will just go AWD first and do more research later

[coarse hamlet]

so how do u wish to proceed with your post here?

mark it as SOLVED?
continue?

if u install AWD anyways, the question is how much work we should put into this

[abstract slate]

I think that I will be marking this post as solved. I have receive significant reduction in ringing following you guys suggestion. There are some very small hint or random area of ringing (You have to use a flashlight on a shiny black print to barely see it). If you guys want to help with that too I will gladly take some picture to continue.

[primal estuary]

Post the picture and we’ll let you know if it for this channel or #unicorn_chasing

[abstract slate]

Give me like 10 mins I am outside rn.

[primal estuary]

I think that relates to PA and takeoff acceleration.

This picture above shows the old line method of calibrating PA

as you can see all the values on the left have a bit of a divit

I think you are seeing a similar thing

[abstract slate]

So do you want me to do the same old test again ?

[primal estuary]

No, I think what you are showing is outside the scope of basic help

the print looks good. What I think it needs is more tuning. This can be done in #slicers_and_print_help

[abstract slate]

This is problably my best attempt at capturing any ringing I still have left

I will repeat this print one more time to see if this pattern is repeating

[abstract slate]

This is the same side as the one in the sunshine.

[primal estuary]

I think you are #slicers_and_print_help or #unicorn_chasing as the fix for this is either the fix for wood grain, or slicer settings