Jump to content

Cooling the feeder


kris

Recommended Posts

Posted · Cooling the feeder

Hi

Has anybody considered cooling the feeder?

Tried several prints during the weekend. All prints failed fairly early on; at first material flow was OK. After a while every print experience underextrusion that would culminate in 0% material flow. As usual I suspected a clogged nozzle. Cleaned it...several times. Didn't help.

Finally I realized that the PLA filament had been flattened by the feeder. The feeder could still grab on to it, but with the new shape the filament would cause significant friction in the tube. No chance for the feeder to able to push it to the hotend. I had previously notice on my UM2's that the feeder wheel would get very warm because it is directly connected to the stepper motor. In addition, due to the climate we had close to 30°C in the room.

I then put a fan behind one of the printers to help cool the feeder. Problem solved.

I am no considering placing small fans to the rear of the prnter to help keep the feeder/ filament cool.

What do you guys think? Any similar experiences?

Cheers,

Kris

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    I haven't done it myself but I've heard of others who had your exact problem and fixed it by adding a small fan back there. I'd say go for it. Especially with the heat wave going on right now it's not a bad idea to help the printer cope.

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    Same here - i had the feeder wheel 'flatten' the filament before it got into the Bowden tube.

    Must have been the v hot weather we had in the UK recently - that won't last but a cooling fan on that feeder stepper motor does sound interesting...

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    I wish Ultimaker had provided a layer of insulation between the feeder shaft and the knurled sleeve somehow. They are in netherlands and if the temp reaches 25C they act like they are going to die of the heat, lol. They probably rarely run the machine that hot.

    I have had the inside of my machine at 40C but only when printing ABS which doesn't get soft until around 100c.

    There was a woman in brazil on the forums who had the same issue at 30C.

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    I have purchased two 60mm fans and designed a printable fan mount.

    My UM2's are all enclosed with acrylic and I will simple cut out a piece of the acrylic and mount the fan to blow directly onto the feeder. I guess it cannot hurt to cool PLA even below 30C. I have noticed that there is a small deformation of the filament even below that temperature. That causes unnecessary friction in the bowden.

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    By the way; does anyone know if I can run an additional fan (12V) from the mainboard?

    It has got a 3Pin Molex connector. If not I'll just use an external power supply.

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    I mounted my 2 feeders (dual head) at the back of the machine and made a bracket with an old 60mm coollermaster pc fan, I run the 12V fan at 5Volt... it's super silent and still does a good job.

    https://www.youmagine.com/designs/ultimaker2-rail-system-u2rs

    @gr5 we had almost 40c last week and I'm still alive :)

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    @gr5 we had almost 40c last week and I'm still alive :)

     

    That's pretty hot!

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    Indeed, this solved the problem.

    Cheers

    20150713_201651.thumb.jpg.1bfed86e395026b2d966debf930747dc.jpg

    20150713_201639.thumb.jpg.d4d97c7e0a795ed5ffe9ac79e229ac96.jpg

    20150713_201651.thumb.jpg.1bfed86e395026b2d966debf930747dc.jpg

    20150713_201639.thumb.jpg.d4d97c7e0a795ed5ffe9ac79e229ac96.jpg

  • Link to post
    Share on other sites

    Posted · Cooling the feeder

    Nice,

    here's a pic of my setup;

    fan.thumb.jpg.b74876cc34d5c89c3c4b5659deaa8fa2.jpg

    fan.thumb.jpg.b74876cc34d5c89c3c4b5659deaa8fa2.jpg

    • Like 1
    Link to post
    Share on other sites

    Posted · Cooling the feeder

    same issue here (my first after a few prints).

    I thought it was a nozzle prob so I tried changing filament, but it didn't move. Then I noticed the filament was jammed in the feeder.

    P1050453.jpg

    ps it's 22C here right now so that can't be the issue I guess.

  • 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

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 48 replies
    ×
    ×
    • Create New...