Jump to content
Ultimaker Community of 3D Printing Experts

2 dollar hardware fix to stop the dreaded flooded printhead head?

Recommended Posts

Posted · 2 dollar hardware fix to stop the dreaded flooded printhead head?

why not  simply put a thermostat in line with the existing thermoresister on the print head.???

these things trigger at 70C, so will only trigger when the melted plastic hits them.  the open or short circuit on the thermosister will stop error  and stop the printer before it becomes a disaster.


they are small enough to fit behind the print block.


this would cost Ultimaker nothing to add to future print heads- its something 3d systems had years ago on their (awlful) cubepro printers to ensure the heatsink was never over temperature.


Could even be easily added on by anyone with a soldering iron.  im very tempted to do this myself, with the right little plugs could be a plug on add on to the printheads





anyone got any thoughts???




  • Like 1
Link to post
Share on other sites
Posted · 2 dollar hardware fix to stop the dreaded flooded printhead head?

I think the basic idea is excellent, and worth trying out. But maybe an optical sensor or mechanical switch might be more reliable? I would fear that a thermal switch could cause false alarms, e.g. when printing hot and slow without cooling fan, so there is no airflow. Then it might get too hot and trip. Or it might miss real leaks when printing fast, cool and with full cooling fan, if the air blows directly on the sensor, and it cools the outer shell of the leaking plastic too fast. Such a sensor should never give false alarms and abort a good print, nor miss real events: that will be the most difficult point, I think.


  • Like 1
Link to post
Share on other sites
Posted · 2 dollar hardware fix to stop the dreaded flooded printhead head?

Shouldn’t be easier to use the camera to actually detect that....? If the area around the nozzle become block send an alert... check every z change or nozzle swap, and done

  • Link to post
    Share on other sites
    Posted · 2 dollar hardware fix to stop the dreaded flooded printhead head?

    I was thinking the sensor inside the cover of the print bay, or tucked up behind the hot block.  This will not be effected by part cooling fan speed at all.

    my thinking is if the plastic if the print core hits 70 something is going wrong- most likely molten plastic touching it.

    it won’t stop it before it happens, but al least stops it going on too far.

    picking the right location for the sensors is the hard part- has to be in the path of the flooding plastic


    as for camera- I can’t that see that being a easy solution at all-  not compared to two wires of a thermal switch.

  • 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

      • Startups, apply for the Forward AM Innovation Award!
        Are you a startup using 3D printing? Perhaps you should continue reading... 
        Together with BASF we are launching the Forward AM Innovation Award - the very first global contest for startups developing new applications with 3D printing!
        Why apply?
        The winning startup will receive €100,000 in goods and services*, along with coaching and marketing exposure from top-notch leaders in the industry.

        Who can apply?
        Your startup creates products using Additive Manufacturing, is less than 5 years old, and has less than 50 employees. We are looking for 3D printing applications with a strong focus on innovation, sustainability and scalability.
        Dental aligners, shoes, tools, automotive parts, music instruments, industrial tooling and molding, medical implants, sports equipment, toys, architecture, fashion, construction... all are welcome to join!
        Do you have an innovative, sustainable and scalable idea that leverages the unique possibilities of 3D printing? Then it is time to apply!
        More information can be found here.
        Applications close on March 28th, 2021
        * What does "in goods and services" mean?
        The winner will be able to pick any item from the overall product and service portfolio of the sponsors, e.g. printers, materials, consulting, software... Choose whatever you need to accelerate your startup.
          • Like
        • 0 replies
      • New here? Register your Ultimaker for free 3D printer onboarding course
        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
        • 0 replies
    • Create New...