Jump to content
Ultimaker Community of 3D Printing Experts

S5 huge layer shift .5" or more on top 20% of print on Y axis


Recommended Posts

Posted · S5 huge layer shift .5" or more on top 20% of print on Y axis

Hello,

What causes a huge layer shift (around .5") on the Y axis only, at some point in a print (top 20% in this case)? 

 

I have a UMS5, .8mm nozzle, printing PLA.

 

The belts all seem fine and tight, I do not detect an looseness anywhere.

 

I was not present during the print unfortunately, so did not have the opportunity to hear any sounds.

 

Picture attached. 

20210315_091702.jpg

  • Link to post
    Share on other sites

    Posted · S5 huge layer shift .5" or more on top 20% of print on Y axis

    It's pretty much always a loose pulley.  Especially if it's just one shift and a large shift.  But there are other causes (overheating driver, too much friction).  90% of the time it's a loose pulley.  To prove it you can mark the pulleys and shafts with a sharpy and next time it happens see if the pulley slipped on it's shaft.

     

    It's almost always the pulley on the motor (the hardest to get to).  2nd most common is the other pulley on that short belt.

     

    Slide head back and forth in the Y direction and notice which stepper moves.  The printers often come with a green and black hex driver.  It's possible to get it into the set screw on the pulley if you slide the head around a bit until it lines up perfectly.  Without having to remove the metal cover or anything else.  Tighten the hell out of that set screw.  It should be scary tight - if you were to use a little L shaped allen wrench your fingers should have red marks and pain afterwards.   Very tight.  Then get the other pulley on the short belt.

    • Like 1
    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
     Share

    • Our picks

      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 11 replies
    ×
    ×
    • Create New...