1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Solved Can someone PLEASE kick me in the Z?

Discussion in 'Troubleshooting' started by Richard Lee, Jan 1, 2018.

Thread Status:
Not open for further replies.
  1. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    After getting rid of my POS Airwolf Axiom, I recently put my R1+ (2016 version) back into service and cannot get my Z height configured correctly. I've been 3D printing for about 5 years now and I would consider my experience to be at an "intermediate" level.

    I performed the following upgrades on the R1+:
    Mike Kelly's Modular X-carriage v2 (Thanks, Mike!)
    Igus DryLin polymer bearings on X-axis
    Full RAMPS 1.4 board conversion (Thanks, Mark!)
    E3D hot end, Bowden type
    Side-mounted MK8 extruder
    AstroSyn vibration dampeners
    Aux. MOSFET board for bed heater
    2 extra cooling fans in bottom compartment (push-pull)
    TL-Smoother boards on X & Y axes

    I configured my own copy of Marlin v1.1.8 and all is working flawlessly with the exception of the Nozzle/Z-height. I know the M565 command no longer applies and has been replaced with M851, but I cannot get it set correctly. I have enabled Babystepping on my GLCD as well.

    I chose GRID leveling due to its simplicity and the fact the I primarily print with my Ultimaker 3 Extended, so the R1+ is mainly used for draft prototypes.

    I simply need someone to teach me (in laymen's terms) how to set the Nozzle height so I can get a good first layer. The entire M851 command is confusing to me -- maybe it's some kind of mental-block? I will gladly post lines from my Marlin configuration if that helps...
     
    #1 Richard Lee, Jan 1, 2018
    Last edited: Jan 2, 2018
  2. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
    Attach and upload your Configuration.h file. It will make it easier to point you in a specific direction. You did remember to comment all the lines you changed for your setup, didn't you?
     
  3. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    Yes, commented with //RL
     
  4. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    Here's my Marlin v1.1.8 config file. Thanks for helping me.
     

    Attached Files:

  5. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
    Here are a couple of lines you can change, not necessary but migh make you printer work better.
    1. Line 328 #define HEATER_0_MAXTEMP 300, it can be over 300C with an E3Dv6.
    2. Line 569 #define DEFAULT_XJERK 9, the Marlin devs messed with this and you need to half your previous settings. Applies to 1.1.7 and 1.1.8 only.
    3. Line 570 #define DEFAULT_YJERK 9, same reason as above.
    4. Use BILINEAR instead of LINEAR for your leveling scheme, it is much better, line 874.
    5. I would increase your leveling points to 5 or 7 I have never seen a single R1 where the bed isn't warped to some extent and more grid points will make it follow the bed better, line 913.
    6. Line 1656 enabled will give you better control of the parts cooling fans.

    I don't see anything there that would cause M851 to not work properly, but it you believe you know the correct offset then try it in line 688 instead of using M851.
     
  6. Avrution

    Avrution Member

    Joined:
    Nov 27, 2017
    Messages:
    164
    Likes Received:
    18
    I will admit I have had issues with the M851 as well, especially with the whole being reversed from M565 - so you aren't alone
     
  7. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    Thanks for the great information. I will definitely include those changes.

    Under the stock firmware, my Z offset is 1.00 (see attachment)
    How do I "write" this in the M851 line? All the + instead of - stuff is confusing to me.
     

    Attached Files:

  8. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    Thanks for the reassurance, I couldn't imagine being alone is this confusion....
     
  9. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
     
  10. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    THANK YOU very much, WheresWaldo, the Z offset is working great using only the Line 688 edit.

    I and getting a lot of vibration (jerk?) when printing a 20mm cube, so I am going to lower Lines 569 & 570 to "7.0" and see if this helps.
     
  11. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
    Also some acceleration numbers are rather on the high side, so you might need to lower those numbers.
     
  12. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0

    Are you referring to Line 557 or another?
     

    Attached Files:

  13. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
    Yep 8000 is about 6x - 8x faster than the machine can actually accelerate without vibration. The TL-Smoothers probably help some, but not 8x better. I am going to be testing those myself on the R2.
     
  14. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    So I should lower X and Y in Line 547 to about 2000 instead of 8000 each?

    Line 557 is OK to keep at 600?
     
  15. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
    Yes, probably will work much better.
     
  16. Avrution

    Avrution Member

    Joined:
    Nov 27, 2017
    Messages:
    164
    Likes Received:
    18
    Did you use the base Marlin or a modded config? The one I have for 1.1.7 has 900, 900, 300, 10000 as the default rates
     
  17. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    I wanted to start from scratch in order to learn more about configuring Marlin, so I used the base Marlin v1.1.8, and with a bit of trial and error (and help from WheresWaldo) I got it working wonderfully with my R1+.
     
  18. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
  19. Avrution

    Avrution Member

    Joined:
    Nov 27, 2017
    Messages:
    164
    Likes Received:
    18
    Is it possible the Z settings weren't working before because Mattercontrol doesn't put the M851 in the gcode and still tried using M565?

    I haven't tried using the Robo software since updating my firmware so it might help knowing for if I have problems as well.
     
  20. Richard Lee

    Richard Lee New Member

    Joined:
    May 30, 2016
    Messages:
    13
    Likes Received:
    0
    @WheresWaldo , everything seems OK now and the R1+ is printing exceptionally well...

    Thanks again for your help.

    Now if I could figure out how to change my forum name...
     
Thread Status:
Not open for further replies.

Share This Page