Jump to content
Ultimaker Community of 3D Printing Experts

Pla stuck on nozzle, heater block and fan shroud

Recommended Posts

Heat up the nozzle to 180-200C and wipe the block and nozzle clean with a rag. You can use something like a flat head screw driver to scrape any stubborn plastic off. It doesn't have to be clinically clean. I've been meaning to buy a brass wire brush for stuff like this, but I never seem to remember to pick one up when I'm at a hardware store.

For the fan shroud. That's a bit of a pain in the arse. If you have a heat gun you can try using that to soften the plastic so that you can scrape it off. Just be careful that you don't over heat the fans while you're doing this. You can also try using a soldering iron if you have a tip for it that you don't care about.

Share this post

Link to post
Share on other sites

Try this before going 180C. Heat to 90C, and try to peel the whole thing off. Its MUCH cleaner if you can grab it as a whole skin. Same idea as the atomic pull it's solid enough to peel off, but not so liquidy that it'll stick onto your cloth and block.

I've done this many times, and it works well for cleaning the nozzle exterior as well. 90C is the magic temperature!

  • Like 1

Share this post

Link to post
Share on other sites

one additional observation, the gap between the bottom of white teflon coupler and the stainless steel part (with holes round it) is too small it should be 1-2mm, this is adjusted by turning the stainless part with the heater at say 150 degrees - take care its quite fragile

Its not clear from the picture but it could be that filament is coming out between the bottom of the stainless bit and the brass print head block

  • Like 2

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
      • 92 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!