V6 clogs PLA - Ender 3 pro

Discussion in 'E3D-v6 and Lite6' started by Liviu, Jun 29, 2020.

  1. Liviu

    Liviu New Member

    Jun 29, 2020
    Likes Received:
    Hello, I am starting to have terrible issues with v6 extrusion on an Ender 3 pro with skr e3 mini v2 and Bowden setup with Creality all metal extruder.

    For a couple of weeks it printed ok but then the madness begin.

    All prints starting ok but after 10~20 layers or 15 min into print the extruder starts skipping, the hot end becoming clogged.
    Things I did to fix it.
    Changed filament PLA
    Changed the temperature from 200 210 220 230
    Turned off the parts fan
    Cold pulls
    Setting retraction from initial 2mm and speed 25 to 3 and speed 40
    (Bowden setup)
    Disassembled the hotend
    At dissemble there was no pla between the nozzle and the heat brake
    The heat brake looks clean to me
    Sadly I have no nozzle to exchange it and test.
    Thermal paste was applied at initial install.
    Assembled again with all the procedure hand right then wrench finger right at 285

    When I did the cold pull the tip of the filament the part that sits inside nozzle was bigger in diameter then the rest of the line.
    At this point I really don’t know what to do anymore.
    I have attached my latest print at 210c no parts fan. 40 speed.
    8034EA59-D059-4879-9C86-3D1EBB0E2101.jpeg F2AC2B11-B5F4-493D-BC6A-D3BDCEE48CAC.jpeg 28C09678-5A03-4BD6-A506-B7C6FAF280C5.jpeg 98FA5419-7A7F-4632-B28D-287388B796DB.jpeg

    Attached Files:

    #1 Liviu, Jun 29, 2020
    Last edited: Jun 29, 2020
  2. TriangleCrab

    TriangleCrab Member

    Oct 1, 2020
    Likes Received:
    (I see this is an old thread, maybe the problem has been solved already)
    What fan are you using to cool the heat sink, the e3d fan at 100% speed?
  3. brewchester

    brewchester New Member

    Jan 14, 2021
    Likes Received:
    I know this is an older thread, but I'm having this exact same issue and I cannot seem to figure out why the v6 is clogging. I am using the stock fan at 100%.

    Here's the details:
    1. I purchased the v6 and a copper heat block for my CR-10S to be able to print abrasive materials such as carbon fiber. (I already have a .8 Ruby nozzle as well as a .4 Hardened Steel).
    2. Prior to this I've been running a dual-gear extruder and the stock hotend with PLA beautifully.
    3. After installing the v6 (I carefully followed the instructions I found online, 280c nozzle tighten, being sure not to over tighten, etc. ) nothing will print. Specifically, I get bad layer adhesion which I feel is due to under extrusion. I can typically get a good first layer, but after that the layers start to lose integrity and eventually don't adhere together.
    4. I ran a config on the stepper motor to adjust it accurately.
    What I've tried:
    1. Upon heating PLA at different temps from 200-240 I can get filament to extrude, but I get a clicking from my extruder, indicating to me that there might be a jam. (this is with the hot end 100mm off the bed).
    2. I removed the hotend and checked that I installed it properly and noticed that the heat break was bent.
    3. I ordered two new titanium heat breaks and re-ran my tests, I have no change in the results.
    4. I pushed the PTFE tubing through the heat sink then into the heat break to ensure it was flush, and I used a tube cutter to ensure that the PTFE is flat.
    5. I reinstalled it and still, the same clicking.
    6. Also to note, I tried multiple materials, even a new one right out of the packaging. I also have a BLtouch and I'm using UBL mesh. The nozzle is level and I've set the Z-offset properly, so it's off the bed enough. I've even tried to push the filament through manually and although it will go through, to me it seems like there's more resistance than it should be.
    I'm at such a loss and I've spent over 5 weeks trying to resolve this.

Share This Page