Jump to content
Ultimaker Community of 3D Printing Experts

PROBLEMS WITH SIDE FANS AND FILAMENT NOT EXTRUDING


KASHMIR
 Share

Recommended Posts

Posted (edited) · PROBLEMS WITH SIDE FANS AND FILAMENT NOT EXTRUDING

Hi

I have been doing some tests with my custom 3D printer which is similar to the ULTIMAKER 2 extended

version. I am using the same controller board and nozzle components plus fans for the hot end.

I am using a gear reducer estruder. please see attached pictures.

the FIRST problem i am having is that every time i print , the fans dont't seem to want to start unless i

nudge them a little, then they work. But that should not be the case

does any one have any helpful solutions.

i am using the marlin firmware for ultimaker 2 with some changes accordng to my printer

travel limits and endstop locations and the motor axis directions.

aside from that i made no other changes to the firmware.

The second problem is that the next day when i want to go print something, the plastic does not extrude

so i have to abort the print, and heatup nozzle through the lcd display and push from the extruder

until the plastic oozes out of nozzle, then everything is fine again. But this should not be the case.

i had done the tests for calibrating the esteps and entered that value in the firmware ans uploaded to printer.

when it prints everything is fine, just that if i close the printer and later on or next day want to print

before it prints it never purges the material, and have to always push from extruder, heat up nozzle etc etc.

Don't want to do that,should be automatic.

what should the spring tension be for 2.85 mm filament , tight or loose ?

How can i tell what is correct ?

If anyone can help me , i would appreciate that very much

ThanksIMG_0789.thumb.JPG.a606e672fb208ac07a7453ee6271674d.JPG[/media]HTB1ek7eNXXXXXc5aXXXq6xXFXXXg.thumb.jpg.f83b8d78e1dd4a5e6a7df6b722f0fbae.jpg

IMG_0789.thumb.JPG.a606e672fb208ac07a7453ee6271674d.JPG

HTB1ek7eNXXXXXc5aXXXq6xXFXXXg.thumb.jpg.f83b8d78e1dd4a5e6a7df6b722f0fbae.jpg

Edited by Guest
  • Link to post
    Share on other sites

    Posted · PROBLEMS WITH SIDE FANS AND FILAMENT NOT EXTRUDING

    Check the small fan if actually is 'on' as soon the head goes 40-50C

    Also never turn off the printer unless the hotend has cooldown to 40-50C or the residual material will partially clog.

    About the extruder no idea, saw that model from china / aliexpress but no idea.

  • Link to post
    Share on other sites

    Posted · PROBLEMS WITH SIDE FANS AND FILAMENT NOT EXTRUDING

    I believe you also do have a problem with a stuck caps lock button on your keyboard...

    About the fans not starting, try to increase the "kickstart" period to a higher amount, your fans might be harder to get spinning than the original UM2 fans

    In the Configuration_adv.h file you will find this line:

    #define FAN_KICKSTART_TIME 100

    change that to 1000, and see if it works then

    Also, are you printing with Ultigcode from Cura? if not, then you have to do your own start gcode to do the priming of the hotend for you.

    • Like 1
    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

      • Ultimaker showcase | April 2022 | 4pm CEST | 10am EDT
        I'm excited because I've personally produced this showcase event, so if you are curious what else I'm up to nowadays, come check it out and say hi in the chat! It would mean a lot! 
          • Thanks
          • Like
        • 4 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
        • 12 replies
    ×
    ×
    • Create New...