bl touch | 3DMeltdown 3D Printing | Page 1

molten furnace May 7, 2023, 4:53 PM

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Did you edit your start script to contain G29 and or M420 S1 ? If not check my video in my profile

hard wasp May 7, 2023, 4:55 PM

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yes i did

molten furnace May 7, 2023, 4:58 PM

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Hmm you saved the z offset ?

hard wasp May 7, 2023, 5:07 PM

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Yes

molten furnace May 7, 2023, 5:14 PM

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hmm

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id check the mechanics of your z axis

hard wasp May 7, 2023, 6:34 PM

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how ? 😄 i am sorry i am new in this

molten furnace May 7, 2023, 7:20 PM

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do you have Zplus a number above 0 behind M420 S1? then it is on

honest haven May 7, 2023, 8:44 PM

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by what means did you set the z offset? how did you determine the number?

hard wasp May 7, 2023, 9:28 PM

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honest haven by what means did you set the z offset? how did you determine the number?

I changed Z then i put numbers to off set and then i home it and i put Z to 0 find out if its on bed

hard wasp May 7, 2023, 10:15 PM

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hard wasp I changed Z then i put numbers to off set and then i home it and i put Z to 0 fi...

Now i tried wizzard off set didnt help

honest haven May 7, 2023, 10:33 PM

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Attach gcode for a print that isn't working.

hard wasp May 7, 2023, 10:36 PM

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No it prints but it prints bad like somewhere is too high and somewhere is too low

honest haven May 7, 2023, 10:52 PM

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yeah, please attach some gcode that does this

crimson bramble May 8, 2023, 1:12 PM

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There is an issue related to slighty twisted rails on the x-axis and probes with offset in the x-axis which could explain this. But I dont know if that applies to your printer

crimson bramble May 8, 2023, 1:50 PM

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Could you share please your configuration for M851?

hard wasp May 8, 2023, 5:55 PM

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crimson bramble Could you share please your configuration for M851?

you mean this files ?

crimson bramble May 8, 2023, 5:55 PM

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No

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You Run Marlin on your machine?

hard wasp May 8, 2023, 5:56 PM

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I uploaded this filmware that have fix for buggy screen with bltouch

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and in info it says marlin so i think yes

crimson bramble May 8, 2023, 5:57 PM

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Can you send the Link for the firmeware?

hard wasp May 8, 2023, 5:57 PM

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Here https://3dprintscape.com/marlin-firmware-builds/

3D Printscape

Rob

Marlin Firmware Builds | 3D Printscape

Here are builds of the Marlin firmware for specified printers. I plan on upgrading these as new version of Marlin are released. If you guys…

crimson bramble May 8, 2023, 6:33 PM

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You have access to a terminal to enter GCode?

hard wasp May 8, 2023, 6:34 PM

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Sorry i feel stupid 😄 how u mean it ?

crimson bramble May 8, 2023, 6:34 PM

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Dont feel stupid please 😉

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Like you have running Octoprint or Pronterface on it?

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A connected Computer, like a PC or a SBC

hard wasp May 8, 2023, 6:35 PM

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No i have not

crimson bramble May 8, 2023, 6:35 PM

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Ok

hard wasp May 8, 2023, 6:36 PM

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I have seen something that Octoprint can make mesh of my bed

crimson bramble May 8, 2023, 6:38 PM

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Can you link me the Holder for the Probe?

hard wasp May 8, 2023, 6:41 PM

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Holder for the Probe?

crimson bramble May 8, 2023, 6:41 PM

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Yes, the mount

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Sorry english isnt my mothertongue 😅

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I want to Check if that issue is related to my guess. And for that I need to know if the probe is parallel on the Y-Axis with your Nozzle

hard wasp May 8, 2023, 6:43 PM

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But i dont get the link u know 😄

crimson bramble May 8, 2023, 6:53 PM

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Actually I cant check if your Problem is related to that issue. But it seems like your BL-Touch is parallel in Y to you nozzle so I doubt its related to that specific mechanical issue.

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As far as I can see things on YouTube and googleing

hard wasp May 8, 2023, 6:56 PM

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For what should i look for ?

crimson bramble May 8, 2023, 7:59 PM

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Easiest way is to Connect a Computer via USB ans using a Software like Pronterface to send GCode. Then send M503 and look for the value for M851. Then we can make shure its that Problem or not.

hard wasp May 10, 2023, 8:17 AM

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What software should i use what u recommend?

crimson bramble May 10, 2023, 9:37 AM

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Pronterface

hard wasp May 10, 2023, 3:02 PM

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crimson bramble Easiest way is to Connect a Computer via USB ans using a Software like Pronterfa...

I tried this and not working and here its M851
https://www.youtube.com/watch?v=y_1Kg45APko&ab_channel=3DMakerNoob

YouTube

3D Maker Noob

Calibrating Z-Offset With A BLTouch Bed Levelling Probe

The first 1000 people to use the link will get a free trial of Skillshare Premium Membership: https://skl.sh/3dmn03211

ANTCLABS BLTouch aliexpress store: http://bit.ly/2zfNxT8

Matterhackers Orbit: http://bit.ly/2zpD7Q0

BLTouch:
Amazon UK: http://amzn.to/2ieTBQz
Amazon US: https://geni.us/BLTouch1

For the latest discounts and codes on 3D Pri...

▶ Play video

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still somewhere its too hight or too low

crimson bramble May 10, 2023, 3:14 PM

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Okay there is a similar issue with the Anycubic i3 Mega. The two rods that lead the Toolhead are a little twisted. So on one side your measurements are Ok and on the other side they are too low.

This issue is adressed here:
https://habitoti.de/wordpress/bltouch-frustration/

I'm not shure if your issue is related to that but there are basically two ways to proceed:

-- Mechanical ---
If you have a digital inclinometer you can take measurements on both sides of your X-Axis and see is there are diffrent values. Then adjust, I dont know if that is possible and how because I dont know your printer.

--- Software ---
Thats an easier way but it dont solve the mechanical issue. Sometimes that isnt possible, AI3M for example. You can edit the mesh via Pronterface by entering corrections for the mesh.

Hansis Blog

Hansi

BLTouch Frustration

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📎 Manual_Patching_of_BedLevel_Marlin119.pdf

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Its a guide for the Anycubic i3 Mega but because its running on Marlin too the values should be the same. Check for a similar Echo from you printer after entering m503 via Pronterface

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Recv: echo: M420 S1 Z0.00 ; Leveling ON
Recv: echo: G29 W I0 J0 Z0.07000
Recv: echo: G29 W I1 J0 Z0.02250
Recv: echo: G29 W I2 J0 Z0.03750
Recv: echo: G29 W I3 J0 Z0.01250
Recv: echo: G29 W I4 J0 Z0.06000
Recv: echo: G29 W I0 J1 Z0.16000
Recv: echo: G29 W I1 J1 Z0.11250
Recv: echo: G29 W I2 J1 Z0.12500
Recv: echo: G29 W I3 J1 Z0.13000
Recv: echo: G29 W I4 J1 Z0.19500
Recv: echo: G29 W I0 J2 Z0.21500
Recv: echo: G29 W I1 J2 Z0.17500
Recv: echo: G29 W I2 J2 Z0.18500
Recv: echo: G29 W I3 J2 Z0.21500
Recv: echo: G29 W I4 J2 Z0.20500
Recv: echo: G29 W I0 J3 Z0.21750
Recv: echo: G29 W I1 J3 Z0.13500
Recv: echo: G29 W I2 J3 Z0.12250
Recv: echo: G29 W I3 J3 Z0.13250
Recv: echo: G29 W I4 J3 Z0.11500
Recv: echo: G29 W I0 J4 Z0.20000
Recv: echo: G29 W I1 J4 Z0.09250
Recv: echo: G29 W I2 J4 Z0.07750
Recv: echo: G29 W I3 J4 Z0.06250
Recv: echo: G29 W I4 J4 Z0.02000

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These are my values and I also need to correct them because my BL-Touch has an offset on the Y-Axis as well.

hard wasp May 10, 2023, 4:00 PM

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Maybe stupid idea but what if i buy cr touch insted bl touch u think its better ?

crimson bramble May 10, 2023, 4:00 PM

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No

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Im not completly shure If your issue is related to that but there are a few clues that let me come to the conclusion its worth a try

hard wasp May 10, 2023, 4:02 PM

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I got that idea casue i can return that product 😄

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Because I bought it recently

crimson bramble May 10, 2023, 4:11 PM

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I have the Hypothesis your issue is following: 1. Your Probe is Not parallel to you nozzle (Y-7.00)
2. Your X-Rail is slighty inclided vertical

So your probe got readings which are Not correlating with the physical position of the nozzle . Because the Probe activated higher then the nozzle physical is. Its slighty, like 1.xx degree. But enough to make issues appear.

If my hypothesis is correct you should be able to get an even first layer after correcting the values with manualy entered corrections.

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If that is the issue we can proceed with an reliable and easy workaround

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But still, I dont know your machine so maybe Im wrong. But its the best advise I have so far and there are a few clues that correlate with that mechanical issue.

hard wasp May 10, 2023, 4:20 PM

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So idk if its right but my Probe is 4,5 cm / 1.77 inch from nozzle

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and my x-rail is bad i would say.

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crimson bramble May 10, 2023, 4:31 PM

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Your Z-Axis is driven by one Stepper?

hard wasp May 10, 2023, 4:32 PM

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Yes

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its ender 3

crimson bramble May 10, 2023, 4:37 PM

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Okay but actually that should be fine because its lead with wheels

hard wasp May 10, 2023, 4:38 PM

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yea

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i dont think that my table is perfect too :d

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And this is ok ?

hard wasp May 10, 2023, 4:38 PM

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hard wasp So idk if its right but my Probe is 4,5 cm / 1.77 inch from nozzle

.

crimson bramble May 10, 2023, 4:39 PM

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Thats Not an issue because its correct noted in the firmware

crimson bramble May 10, 2023, 4:41 PM

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hard wasp

Level would be better but as long as buildplate and x-axis are parallel things should be fine

hard wasp May 10, 2023, 4:42 PM

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Ok

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So u dont think its the problem in bltouch ?

crimson bramble May 10, 2023, 4:46 PM

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No

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I explained my supposition above, I think its a mechanical issue because one side is inconsistent with the other Side but reproduceable

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If your bl-touch would be broken your readings would be inconsistent all along all points and not reproduceable

graceful dew May 10, 2023, 4:56 PM

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a skewed gantry shouldn't matter as long as the bltouch is parallel to Z.
I think the gantry is just binding and adjusting the rollers should solve that.
I didn't read the whole thing but your printer knows how many mm your probe is to the left?

hard wasp May 10, 2023, 4:57 PM

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To left ?

graceful dew May 10, 2023, 5:02 PM

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hard wasp To left ?

To the left from your nozzle.

hard wasp May 10, 2023, 5:03 PM

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4,5 CM so 45 mm

graceful dew May 10, 2023, 5:03 PM

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Your printer knows that too?

hard wasp May 10, 2023, 5:04 PM

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in my is -44

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so i can change it

crimson bramble May 10, 2023, 5:08 PM

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Dont Change that in firmeware! This can lead to damage of your printer!

graceful dew May 10, 2023, 5:08 PM

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lol

crimson bramble May 10, 2023, 5:16 PM

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Its cruxial you dont change that values in x and y when your probe is still mounted like at the Moment, otherwise your printer May breaks your endstops while probing because It thinks the probe is at a different position

graceful dew May 10, 2023, 5:18 PM

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It won't break your endstops. Why would it do that? Also i am talking about a different offset. Yours is where it's homing, mine is offset from nozzle to probe.

hard wasp May 10, 2023, 5:21 PM

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crimson bramble Dont Change that in firmeware! This can lead to damage of your printer!

Should i leave IT in 44

graceful dew May 10, 2023, 5:30 PM

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I think that's negligible anyway. Your problem is your gantry is binding i think, so it doesn't always end up at the same height when commanded to the same height.

hard wasp May 10, 2023, 5:30 PM

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Yea.

crimson bramble May 10, 2023, 5:31 PM

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graceful dew It won't break your endstops. Why would it do that? Also i am talking about a di...

When you enter different Offsets that not correlating with your actuall Offsets its possible to break them. Mine did, it drove far to right and tried to probe at a point off the bed. I was lucky hitting the switch faster then the steppers could pull so mine were just bended. I had a critical failure because my firmware reseted to Defaults with wrong offsets and me Not noticing it until I try to autolevel

crimson bramble May 10, 2023, 5:33 PM

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graceful dew I think that's negligible anyway. Your problem is your gantry is binding i think...

Yes, correct

graceful dew May 10, 2023, 5:33 PM

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crimson bramble When you enter different Offsets that not correlating with your actuall Offsets ...

But that wouldn't break your endstop as it runs off in the opposite direction. Also have your finger ready on emergency stop when first trying new machine parameters.

crimson bramble May 10, 2023, 5:35 PM

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Right, but I should Stop telling stories about my issues and try to solve the presented one

graceful dew May 10, 2023, 5:35 PM

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Adjust rollers until it's no longer binding.

hard wasp May 10, 2023, 5:45 PM

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How u mean its binding u mean nozzle with bed ?

graceful dew May 10, 2023, 5:46 PM

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I mean the rollers that are guiding the gantry up and down are too tight.

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Take out the Z-screw(s), rest the gantry on two softdrink cans, loosen all adjustable rollers, tighten and adjust rollers until they are aligned but not tight.

When you are done there should be no motion in X and Y but basically freefall in Z.

hard wasp May 10, 2023, 5:49 PM

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U mean this sorry but i am new in this

graceful dew May 10, 2023, 5:50 PM

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Yes, them wheels. The inner one on each side is adjustable

hard wasp May 10, 2023, 5:51 PM

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yea bolt ?in between construction

graceful dew May 10, 2023, 5:51 PM

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?

hard wasp May 10, 2023, 5:51 PM

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this

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rn_image_picker_lib_temp_9f3a9e66-b559-45de-ac7b-f87f50bd0f17.jpg

graceful dew May 10, 2023, 5:54 PM

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yes. you turn that and the wheel moves side to side

hard wasp May 10, 2023, 5:54 PM

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yes

graceful dew May 10, 2023, 5:55 PM

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you need to adjust that so it's just close enough to guide but not tight. gantry should freefall when there is no screw

hard wasp May 10, 2023, 5:58 PM

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I think i got it

graceful dew May 10, 2023, 6:01 PM

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It has to be either software or hardware.
In software there is only probe offset that matters, but you set xy close enough and z wouldn't make it inconsistent.
In hardware there is only one symptom, when the nozzle isn't at the height the printer believes it to be.
Nozzleheight is always gantryheight - thatmuch mm, so the only way i think the nozzle could end up at a different height than commanded is a gantry that fights the screw or a dodgy screw.

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btw the ender3 gets like 100 times better when you add a 2nd Z-screw

hard wasp May 10, 2023, 6:06 PM

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Sorry, thats possible ? never seen that

graceful dew May 10, 2023, 6:08 PM

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hard wasp May 10, 2023, 6:09 PM

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Oh u mean this

graceful dew May 10, 2023, 6:09 PM

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What did you think i mean?

hard wasp May 10, 2023, 6:10 PM

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Idk 😄 but yea i have seen this

graceful dew May 10, 2023, 6:13 PM

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There are kits on amazon for about 50€. highly recommended upgrade.

Anyway. You adjusted those wheels? First layer better now?

hard wasp May 10, 2023, 6:13 PM

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gonna try it

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so no need to adjust bed like just Z offset

graceful dew May 10, 2023, 6:17 PM

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wdym?

hard wasp May 10, 2023, 6:18 PM

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That i have seen some people adjust bed with wheels like normally when u dont have bltouch

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they set bltouch offset then wheels too

graceful dew May 10, 2023, 6:21 PM

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Oh, you should do adjust the bed even when you have bltouch. BLtouch is to compensate what you can't adjust with the bedscrews. The less it needs to compensate the better.

hard wasp May 10, 2023, 6:21 PM

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ok i will

hard wasp May 10, 2023, 6:42 PM

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This is weird it looks like its too close but its not even sticking

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honest haven May 10, 2023, 6:45 PM

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yes. looks too close

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raise the z offset maybe 0.06 or so

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also attach that gcode

hard wasp May 10, 2023, 6:47 PM

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📎 CE3E3V2_3D_test_V3_0.4mm.gcode

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I can try to run print and when its printing i can try to raise it by babysteps

honest haven May 10, 2023, 6:51 PM

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You should also enable acceleration control in your slicer

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500mm/s/s is a good starting point for the initial layer and visible features

hard wasp May 10, 2023, 7:36 PM

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Idk guys i tried to babystep Z but still somewhere is too hight and it wont stick and somewhere its perfect and on onther end its too low

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I dont think its problem in a device but still thinking about cr touch

crimson bramble May 10, 2023, 8:01 PM

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Is it consistent wrong? Like its always too Low at one side or do the sides Change?

hard wasp May 10, 2023, 8:22 PM

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Its like one side IS too low and other side IS on even sticking to bed

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Is not even sticking*

honest haven May 10, 2023, 8:38 PM

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show pics/vids

hard wasp May 10, 2023, 8:40 PM

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Sorry cant rn i Can tommorow

hard wasp May 13, 2023, 5:30 PM

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Little bit late sorry didnt have time just question what is fade height

hard wasp May 13, 2023, 5:58 PM

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Somewhere its perfect but still

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Like now its perfect but somewhere its still bad

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but gimme second maybe i got it

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If i edit babysteps i need to add that Value to off set right ?

hard wasp May 13, 2023, 6:27 PM

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In the middle its perfect but for some reason on sides its falling off

hard wasp May 13, 2023, 6:55 PM

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hard wasp

I made a test print exactly like in this video and then i tried to print test boat but this happen

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That test print was perfectly balanced 😄 but boat nothing

molten furnace May 13, 2023, 6:59 PM

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clean the bed with water and soap maybe you have finger grease on it now that you fingerd it 😄

hard wasp May 13, 2023, 7:04 PM

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ok i can try 😄

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If i am not wrong i should clean it everytime after print with alcohol ?

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Bro its doing it like i am trying to make bltouch work for week and maybe more

molten furnace May 13, 2023, 8:42 PM

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Not every time but ipa leaves some residue

hard wasp May 13, 2023, 8:43 PM

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I am printing test boat and it looks awesome for now i will send some picture for your opinion

molten furnace May 13, 2023, 8:43 PM

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oolala

hard wasp May 13, 2023, 9:02 PM

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I think it come out pretty good

molten furnace May 13, 2023, 9:12 PM

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id say so

hard wasp May 13, 2023, 9:18 PM

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I need to thanks everyone who helped and join this conversation loveg

#bl touch