The semi-bottom layers get squished.

[brittle perch]

This has been an issue for a while. Yesterday, I finally got around to doing some doing. Now, I have found, that increasing z-offset, as many suggested, did subdue the issue. However, through testing (Increasing z-offset to a slightly higher than usual, to the point where it barely sticks), logically the issue would be gone, and a different issue relating to too high z-offset would be present, however that was not the case.
It could be v-rollers, however upon checking when raising the tool head to 500mm (Past the ~2-3mm squish mark and eccentric nut tightening, but I tightened them when it was 0red and making sure the gantry didn't droop using a leveler, and making sure when I life one side of the gantry it didn't just go up on it's own; it lifted part of the printer with it (stiff ig). I have installed a 3d-printed motor spacer, which as far as I am aware hasn't fixed, I could try remove the spacer, or install a thicker spacer. Now, vefore installing klipper as well as a new heatbreak (irrelevant imo), New motor for the extruder and a duel drive bmg clone, as well a smoving to klipper, the issue started (I had some decent prints earlier before uograding, like a 50 cal and some other minor bullets). The issue isn't the worst, it doesn't fail prints, it just makes them a bit ugly.

I have roughly 4-5 hours to work on this issue from now on, and another 4-5 tommorow (till friday). My idea is it could be z-binding, however that doesn't make sense since I got decent prints almost before upgrading (Then I just stopped printing altogether until I upgraded to klipper + physical upgrades). As far as I'm aware, the blobs are only on the outside, as during printing they don't appear to be visible.

could be g code settings. Theoretically; but the filament useagle hasn't changed since I bought the printer.
Specs ig:
-Klipper
-Ender 3 pro
-.4mm nozzle
-Deafult speed within orca
-PETG - 235 (230 first) 85 bed, 30 fan. Off for first.

I will send photos shortly.

[timid girder]

AI Help

It sounds like you have put a lot of effort into troubleshooting your printing issues. Since you have already adjusted the z-offset, checked the v-rollers, and made some upgrades to your printer, it might be worth looking into your slicer settings to ensure they are optimized for your current setup. Issues like z-binding or G-code settings could also be potential causes.

If you could provide some photos of the prints and any specific settings you are using in your slicer, that would be helpful in diagnosing the issue further. Additionally, make sure the filament is not old or exposed to moisture, as that can lead to print quality issues with PETG.

Feel free to share the photos and any additional details, and we can try to help you further troubleshoot the problem within the constraints of 3D printing.

WARNING: This response is AI generated and may contain errors.

[brittle perch]

I have counted almost 40 of the benches.

Update: I have found that when using my fancy little nob on the z-increase, there's a point where it becomes hard to rotate.

What could the cause be?

This could be smth, but the point wher eit becomes harder is above the error line

Mb for shit image quality, android n such

could be an issue, however is still a point of concern.

What should I do as my next course of action?

Here, you can observe when z-offset was too high.

The preoblem persisted, and wasn't fully mitigated. But hey atleasy I see the text now.

Kinda.

Idk.

[brittle perch]

Used to be this

[sharp horizon]

thats ender 3 quality right there!

points and laughs

oh so it got worse?

what changed to make it suddenly worse?

are we taking abuot just z offset right now?

[brittle perch]

No no no

It used to be that way

Until I adjusted the z offset

[sharp horizon]

the bottom grey benchy, looks a loooooooooooooooooooooot cleaner than the top dark grey benchy

[brittle perch]

Which helped reduce the issue

[sharp horizon]

reduce?

[brittle perch]

That's the one with a too high offset

To test whether offset would fix

[sharp horizon]

so the issue isnt z offset?

[brittle perch]

It was it partially

There's something else though

[sharp horizon]

i didnt read the description it looks long and tedius to read im looking for a quick fix with minumum effort

[brittle perch]

;-;

[sharp horizon]

:D

[brittle perch]

I explained everything in the captions and text

Take a read if you want, it'll help you understand my position

[sharp horizon]

are we focusing on this for now? the ringing?

or thats later?

[brittle perch]

Ringing isn't that much of an issue

It's the layers beign squished

[sharp horizon]

soo can we run a 50x50 single layer square to determine z offset?

see how clean it is

[brittle perch]

I think there is no need for that

As I tuned the z offset

[sharp horizon]

is that the same as this?

[brittle perch]

And please, read this

[brittle perch]

Yes

[sharp horizon]

ughhhhhh

[brittle perch]

I'm sorry, but I compiled all the info I had

[sharp horizon]

so ur 100% certain its not a cooling or temp issue before i read all this?

or speed

[brittle perch]

Yes

As I experimented with cooling and temp

Both worked fine before upgrades

And z-offset ain't the problem as 'However, through testing (Increasing z-offset to a slightly higher than usual, to the point where it barely sticks), logically the issue would be gone, and a different issue relating to too high z-offset would be present, however that was not the case. '

[brittle perch]

As shown here

[sharp horizon]

yeah idk what it is tbh. even after reading ur stuff

[sharp horizon]

did u test this on other objects

[brittle perch]

Yes

[sharp horizon]

perhaps maintain that angle on a print

[brittle perch]

I have printed an aperture science z-nob with similar 'blobbing'

It was essentially a cylinder

[sharp horizon]

so its not angle related?

overhang i mean

[brittle perch]

No.

The printer used to be able to print overhangs fine.

[sharp horizon]

its just towards the bed basically eveyrthing at that point there? does it always stop at that Z height?

[brittle perch]

Yea, once I set the z-offset to the ideal

I counted roughly 4 layers up

On most prints where the blobing happened

And the z offset reduced the height of the issue, but not changing the starting point

[sharp horizon]

have u tested this with pla or another filament?

[brittle perch]

No I havn't. Filament is dry btw. But if it was a problem with the filament then prints before wouldn't have worked.

I have a quite clean print with the same material, and settings, of a few bullets (Don't ask why)

[sharp horizon]

have u tried running factory settings from slicer?

or printing an old gcode file that worked before?

ender 3s are so frustrating to fix and diagnose. so many flaws.

and were positive its not overextrusion or anything like that?

[brittle perch]

I'm sure as I just recently calibrated my e-steps

[sharp horizon]

https://www.reddit.com/r/FixMyPrint/comments/n0wzgv/whats_going_on_with_my_benchy_bottom_rest_of/

[brittle perch]

But you learn a lot

[brittle perch]

Yea I found that too

[sharp horizon]

):

[sharp horizon]

yeah but what about flow

[brittle perch]

I'm sure flow isn't the issue

If it was I'd be seeing it elsewhere on the print

[sharp horizon]

do u have a finished benchy photo

[brittle perch]

Uhh I don't

A friend of mine uhh. Did a durability test

[sharp horizon]

well take one!

u said u printed 40

[brittle perch]

By throwing it against a wall....

[brittle perch]

40 benchies that reached the problem line

[sharp horizon]

u sure its not PTFE related?

perhaps it degraded. suddenly causing the issue

but without seeing any possibility of stringing. i cant rule it out. since u only printed hulls and below

maybe a hotend gap. altrhough if u didnt change the nozzle or mess with the hotend lately then i dont think it is but then it could be the ptfe that degraded causing a simliar issue.

[brittle perch]

If it where PTFE related, the problem would be persistant across the print

I have a print I made earlier this week

Didn't finish cuz I yanked the cord on accident

[sharp horizon]

thats a stringy mess but yeah

i imagine it would

still idk what else to suggest

[brittle perch]

You've omitted or forgot one thing

Z-screw binding/ motor spacing

[sharp horizon]

i would but that print doesnt have iut

clean around at same layers for benchy

so that should be ruled out yeah?

wouldnt effect one print and not another

[brittle perch]

Here's the finished print

[sharp horizon]

ah this?

thought that was part of the print

[brittle perch]

It's significantly better though

[sharp horizon]

but another angles does show it yeah

well check ur z rods

and motor spacing LOL

lube it

check for bent

[brittle perch]

I already put a spacer

[sharp horizon]

binding

REEEEEEEEEEEEEEE

refund

sell

get a reliable printer

[brittle perch]

burn

[sharp horizon]

easy fix!

well if u do find the solution or someone else figures it out. let me know im curious

[brittle perch]

I'll ask around.