Jump to content
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

    • Introducing Ultimaker Cura 3.6 | Beta
      Ultimaker Cura 3.6 | Beta is available. It comes with new features, bug fixes, and UX improvements. We would really like to have your feedback on it to make our stable release as good as it can be. As always, you can download the beta for free from our website, for Windows, MacOS, and Linux.
        • Like
      • 88 replies
    • Print Core CC | Red for Ruby
      Q: For some users, abrasive materials may be a new subject matter. Can you explain what it is that makes a material abrasive when you are not sure which print core to use?
      A: Materials which are hard in a solid piece (like metals, ceramics and carbon fibers) will generally also wear down the nozzle. In general one should assume...
        • Like
      • 30 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 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!