Jump to content
Cura Connect | Survey Read more... ×
Ultimaker Community of 3D Printing Experts
AirRocketWorks

Ultimaker 2+ feeder problems

Recommended Posts

I wanted to share a problem I have recently observed with my Ultimaker 2 that was recently upgraded to a 2+. I did the upgrade a few months ago, and all the feed issues I had with the original machine were solved - until about a week ago. I noticed that more and more prints were failing with a jammed feeder.

The nozzle appeared fine, so I disassembled the feeder mechanism to take a look. When I looked at the idler wheel that pushes the filament up against the knurled drive wheel, I noticed that the bearing has a steel pulley over the outer race of the bearing, and this wheel has a groove in it. However, it appears that this wheel is bonded in place with some kind of retaining compound, most likely a Loctite 680. It is this bond that prevents the pulley from sliding off the bearing. In my case, it appears that this bond was not secure, and the pulley slid from being centered on the bearing, and shifted sideways far enough to drag on the pivot arm. I have a picture showing the problem, but for some reason this forum won't let me attach it. very frustrating that I can't upload a file from my computer to attach directly. The links I have tried to the image don't work.

I was able to push the pulley back towards the center of the bearing, which allowed me to start printing again. I have had to recenter this pulley two times in the last week.

I have contacted the reseller where I purchased the upgrade kit, and they are sending me a replacement part. Thanks fbrc8! If the design appears to be the same parts, I may take the time to machine my own pulley with a shoulder on one side and an internal snap ring on the other side so it can't shift. I had done this same exact modification 4 years ago to my Thingomatic, and it worked well for years.

I just wanted other users to be aware of this potential problem if they have issues with material feeding. Other than this one slight annoyance, the printer has been working great, and the 2+ upgrade was certainly an improvement to an already great machine.

Share this post


Link to post
Share on other sites

That's really interesting. I'd really like to see a photo of that if you can sort out the upload image bit

I know there's been a couple people who had trouble with the gear not staying in position on the stepper motor shaft. In those cases, apparently some of the lubricant got onto the shaft and is causing the gear to slip.

Share this post


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

    • Architect Design Contest | People
      The goal of this contest is to design a set of people figurines that could be used in such a project to make an area, office or mall seem populated. 
      Think of different types of people in different environments, like walking people, people standing still, working people, and both men and women.
       
      • 7 replies
    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!