Jump to content
UltiMaker Community of 3D Printing Experts

S5 purge filament when switching from dark to light?


jsw
 Share

Recommended Posts

Posted · S5 purge filament when switching from dark to light?

Is there an easy way to simply extrude more filament when the purge when loading did not clear all of the color from the old filament out?

 

This morning I finished a print with jet black PETg, unloaded the filament, then loaded in a light colored transparent PLA and let the purge while holding for 'consistent extrusion' to run as long as it could.

 

It still did not clear all of the black out of the system, and the bottom of the new print was 'stained' with the residual black for a few layers.

 

I had to abort and restart the print.

 

Is there a simple way to continue or restart the purge, or any other easy work-around for this?

 

Thanks.

  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?

    I rarely print transparent. I also noticed this between yellow ABS and transparent CPE+.

    A yellowed part really doesn't look nice.


    I had to print about one to two hours until the effect was gone. Therefore I let the printer print this time since then.

    Alternatively, of course, a print head cleaning with Ultimaker Cleaning Filament would work.
    However, I prefer the printer to work instead of me.

  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?

    Thanks.

     

    I looked through the printer front panel menu and I did not see anything that allowed just a manual extruder flow.

     

    On my 'other' printer (Prusa I3) when you change filaments it purges for a while and asks 'Is this the correct color?' and if you answer NO it will repeat as many times as needed.  It also has a manual Extrude Filament option as well.

     

    On the S5, it purges for a while after a filament change and runs for quite a while, asking for you to confirm, but it eventually stops and in my case, before all of the black had been purged out.

     

    I have to do another black PETg print today, and when I change filament after that, if it's a light color, I have a calibration cube on a memory stick and I'll probably just start that printing and abort after the new filament looks OK.

     

    I'm wondering if maybe there's a quickie gcode to do such a purge?

  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?

    The Ultimaker 2 also have this. Just not the S5.

    The S5 also does not like G-code. Therefore, I would maybe describe an object in the air and try to print that without support. With the plugin Z-Offset that should work. But it would be very individual and filament dependent.


    There is the prime blob in the setting. The extrudes a little more.

    With an Ultimaker Material Station, it makes a longer extrusion phase before each print.

    But practically all this is not enough if you want to print transparent.

    I had recently also done so that I have printed small parts until they were completely transparent.

     

    I don't have any other ideas right now.

    Many greetings

  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?
    1 hour ago, Carla_Birch said:

    Would running a cold pull clean of the print core help?

     

    I'm sure it would remove most of the contaminating filament, but what I'm looking for is something simple, as in no futzing around disconnecting tubing and such, preferably one (or minimal) keypresses, just something to effectively purge the darker filament from the extruder, which the procedure for loading filament fails to do completely.

     

    Something simpler than starting a sacrificial print and aborting it when the color is adequately purged.

  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?

    The contamination effect happens when going from a higher temperature material to a lower temperature material like PLA.

    A simple solution to avoid it would be to have different print cores for materials that differ more than 10 degree in print temperature.

  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?

    That's really not a simple solution, sorry.

     

    Other manufacturers have an easy method to simply extrude material.

     

    How much effort would that be to include that in the Ultimaker?

     

    Who should I go to, officially, to request such a function?

  • Link to post
    Share on other sites

    Posted (edited) · S5 purge filament when switching from dark to light?

    Its kind of hidden but for manual extrusion, Select the material on the touch screen > press the 3 dots in the top right corner > select Move 

     

    Another, possibly better, way to purge is to to enable an extra large skirt to be printed in Cura under Build Plate Adhesion settings.

     

     

    Edited by Travis7s
  • Link to post
    Share on other sites

    Posted · S5 purge filament when switching from dark to light?
    On 12/5/2021 at 11:04 PM, jsw said:

    That's really not a simple solution, sorry.

     

    Well, it's a quick solution. Purging centimeters of material (which is necessary to get a nozzle really cleaned out for some combinations) seems to me like a solution that takes way more time and wastes material. But that is of course just my point of view.

  • 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

      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
         
         
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
         
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
         
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.
         

         
        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 10 replies
      • UltiMaker Cura 5.3.0-Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
         
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 16 replies
      • 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
        • 14 replies
    ×
    ×
    • Create New...