Manual bed leveling, incorrect Z height.

[nique88]

Well hello,

I've got an issue I cannot figure out. Since 1 month I use manual mesh bed leveling. After I printed something that had to be very accurate, the issue came up.

I printed a calibration cube to be sure. The x and the y are 19.8mm but the Z is 18.85mm.

I changed the hardware from the Z with my other printer but still the same measurement. When I put the nozzle on the bed and set manually 1mm steps I measure exactly 1mm with the feeler gauge.

I think it has something to do with the MBL. I tried also different fade heights but nothing changed. From what I can see is that the first couple mm of the prints are squished to much on eachother.

Also this difference in Z is not linear. On every object with different heights the difference in Z is around 1.15mm.

When I print with standard bed leveling I get the measurements spot on. Edit: I don't set Z offset because I always use babystep at start of every print so the first layer is perfect, doing it by eye.

Who has the answer for this trouble?

Thanks in advance

Printer: ender 3 Software: Cura Firmware: marlin 1.1.9

[reloxx13]

m420 s1 in startcode to apply the mesh?

measure z without printing, move it to 50mm, mark it with tape on the the profile, move up for 100mm, mark again and measure the distance ( hope u understand what i mean :p ).

ps

• Include a ZIP file containing your Configuration.h and Configuration_adv.h files.

[nique88]

The m420 I have in my start code.

I know where you want go to. The calibration of my Z is ok. I did the measurement and everything is ok. Also without mesh bed leveling the cali cube comes out nearly perfect.

Tonight I will add my config.

Thanks

[shitcreek]

@nique88 Has your issue been resolved? Can we close this issue?

[nique88]

It's not resolved. But I use standard bed leveling now. It gave me headache!

Greetings

-------- Oorspronkelijk bericht -------- Van: Luu Lac notifications@github.com Datum: 15-05-19 02:44 (GMT+01:00) Aan: MarlinFirmware/Marlin Marlin@noreply.github.com Cc: nique88 n.hoogvelt@hotmail.com, Mention mention@noreply.github.com Onderwerp: Re: [MarlinFirmware/Marlin] Manual bed leveling, incorrect Z height. (#13385)

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