Jump to content
Ultimaker Community of 3D Printing Experts

Noise when swapping printcores and moving past Z bearings


Recommended Posts

Posted · Noise when swapping printcores and moving past Z bearings

Hi so I have have had my UM3 extended for about 2 weeks now and I just oiled the bearings last week for the x and y axis and it is starting to make some weird noises.  Please see the videos here.  https://photos.app.goo.gl/RRrgZTrEF5HUilKC3

 

Issue 1. For some reason when swapping print heads I can't get the sound to go away when the lever enters the opening.  I tried re calibrating a few times and that didn't work.   

 

Issue 2.  It looks like the x/y plastic piece is hitting the upright z bearings on both sides.  How do I fix this or is this normal?  

 

Thanks,

Greg

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    If you are referring to the sound when the lever is activated in the lever catch, that is not bad. My first one sounded like some kinda groan LOL. But the ka-thunk sound is not present in either of my machines. I noticed that in both vids. It wounds like something is hitting something else, but I have no idea what....sorry I could not be more help.

     

    I think it is time to consult the volcano of knowledge, @gr5

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings
    40 minutes ago, GFlow said:

    I think its the plastic bracket hitting the upright z bearing.  I don't know how to adjust it however.

     

    Well, the sliding block at the back is just slanted a bit. You can twist it back in place. And while you are at it - take sure that the rod does not stick out on the back of the sliding block. That's all. The glorious @fbrc8-erin made a video:

     

    Reseating Sliding Blocks

    • Like 2
    • Thanks 1
    Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    Yep that did it! What do you think causes it to get offset like that?  Perhaps when I was manually moving the printhead to lubricate the x/y shafts?

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    So there is still some sounds while printing and I think it is due to play in the axles as I can move one of them back and forth with my hand.  I am trying to re calibrate the print head as seen here: https://ultimaker.com/en/resources/50679-check-for-play-on-axles.  I am confused on when it says to check to make sure the axles are in the middle of the bearings.  What exactly does that mean.  Also when using the calibration sticks it says to tighten the set screws, but I thought I already did that on a previous step?  Am I missing something?

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    Hi, Gflow,

     

    Any time the printhead shafts get popped out of the sliding block halves, it's worth double checking to make sure they're fully seated back and in the right location afterwards. 

     

    Each of the frame panels has bearings pressed into it during assembly. If you put your finger on each side of the rod on the outside of the printer, the rod shouldn't stick out on either end. Does that make sense, or would a video help?

     

    If the rods have play, you have to loosen the pulleys to push the pulleys back up against the wall, so it's worth double checking that they're actually aligned still after you've done that.

    • Thanks 1
    Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    Ah yes that does make sense, no need for a video!  Thanks

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    So I went and checked all the bearings and they look/feel good to go, but it still rattles.  See video below, there is a metallic rattle that wasn't there before.

     

    https://photos.app.goo.gl/hwRO4urjYHRY8eAX2

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    I think the clicking noise you are hearing is the bed continuously self leveling.  You may hear that clicking sound for as much as the first 10mm of the print.

     

    Does that sound about right Erin?

  • Link to post
    Share on other sites
    Posted (edited) · Noise when swapping printcores and moving past Z bearings

    Yup. That one sounds like the regular active leveling noise. Sounds just like mine: 

     

     

     

    Edited by fbrc8-erin
  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings
    3 minutes ago, fbrc8-erin said:

    Yup. That one sounds like the regular active leveling noise. Sounds just like mine: 

     

    So maybe I don't understand, but where is yours making the same noise?  I am talking about the noise from 20 seconds to 24 seconds in my video.

     

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    You need to fast forward to Video 4 of 12 to get to the active leveling noise that Erin is referring to.  Erin is with with Fbrc8, the U.S. assembler and distributor for Ultimaker.  She knows what she's talkn' about.

     

    I think if you reach under the build plate during the time that your noise is most prevalent and just lightly touch the Z screw, you'll feel it.

     

    Could be the blue painters tape is upsetting the calibration.  If you are printing with PLA, you probably don't need it as long as your bed is at 60°  Try printing the same part with a clean glass.  I use 91% isopropyl alcohol, with a paper towel, but the more common 70% will certainly due.

     

    Here's a really good read by Daid on the whole self leveling concept.

     

    Hope this helps.

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    I'm so sorry, Gflow. I linked the wrong video previously. I've gone back and edited my original post now:

     

     

  • Link to post
    Share on other sites
    Posted · Noise when swapping printcores and moving past Z bearings

    Yeah it doesn't sound the same to me.  The noise only happens when the print head is changing directions, it doesn't make the noise when travelling in a straight line..  Also I am printing with nylon, and I had been using just the glass for the first few prints, and it worked great, but now the prints aren't sticking, that is why I went to the painters tape.

  • Link to post
    Share on other sites
    Posted (edited) · Noise when swapping printcores and moving past Z bearings
    On ‎11‎/‎04‎/‎2018 at 2:06 PM, GFlow said:

    The noise only happens when the print head is changing directions, it doesn't make the noise when travelling in a straight line.. 


    I have exactly the same noises - it is as though something is loose and rattling (definitely not the levelling noises).

    Follow-up ... yes, there's something rattling in the print head unit. But I've done a lot more investigation and there ARE also levelling noises. Just touching the build-plate screw I can feel the screw moving fractionally.

    Edited by emtee
    Follow-up
  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Talking additive | The 3D printing podcast
        Why should we be the only ones asking questions? Join us and ask Jabil all your questions on September 22nd 5pm CET
          • Like
        • 3 replies
      • Ultimaker masterclass: Optimizing your Ultimaker Cura workflow
        Save your seat for either broadcast on September 23.
        What will you learn?
        · Best practices for iterative print preparation and every lesson you should learn from each print
        · The right way to use per-object settings and when they are most useful
        · Easy-to-use resources for anyone who wants to develop their own printer definitions, plugins, or print profiles
        · How to optimize print profile settings and whether to “keep” or “discard” changes
        · When is the right time to export your drawing from CAD? (Based on Ultimaker Cura’s surprising power as 3D control software)
        · And a whole lot more tips and tricks!
         
        How can I join?
        This free masterclass will take place twice:
        1. 11am CEST (5pm SGT, 5am EDT)
        2. 5pm CEST (11am EDT, 8am PDT, 11pm SGT)
          • Like
        • 0 replies
      • Do you use 3D printing at work? Let us know
        It doesn't matter if you are using 1 Ultimaker or 10, there is inspiration in everything. We're looking for ...
        • 1 reply
    ×
    ×
    • Create New...