Palette 2 Jamming

Comments

61 comments

  • Avatar
    Roger M

    Looks similar to my issue descibed in this topic, allthough i'm having it while using TPU.

     

    0
    Comment actions Permalink
  • Avatar
    P N

    I’m using PLA btw

    0
    Comment actions Permalink
  • Avatar
    IronHalo

    Did that jam on the switch, or was the Palette just not feeding out anymore filament?  It looks like that loop is pulled pretty tight.  Almost like the P2 had stopped feeding while the printer continued.

    0
    Comment actions Permalink
  • Avatar
    Roger M

    It's the Devils work. Just now i have exactly the same situation with my current print...

     

    Now this is with PLA/PVA combination. Both filaments are quite stiff (about the same for PVA and PLA).

    This invalidates the 'solution' that i got on the other topic where i describe the same issue with using TPU.

    This buffer switch is a vital component but in my opinion a flawed design.

    Again, a print that was 6 hours in went to waste...

    Anyone any suggestions beside doing a recalibration?

     

    EDIT:

    My situation was a bit different from the one in the TPU topic, as here the switch is not pressed but the filament is pressed against the switch but not dragging the switch lever with it, supposedly because the force is right on the lever of the switch.

    I was able to remove the cover taking the filament out of the buffer and moving the scoll wheel. That let the P2 continue to put more filament in the buffer. I was strugling a bit to close the cover again, but the print could continue, only loosing a layer line or 2. 

    The case of Pavan is also different from this one, because in Pavan's case the switch seems to be pressed but i do not see the blue light.

    0
    Comment actions Permalink
  • Avatar
    Roger M

    Jonny, would enlarging the lever of the switch throw off the P2 in its functioning, other than that is starts making filament sooner and preventing the above situation?

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    In both cases, was the unit turned off afterwards as the blue light from the buffer switch is turned off. If it was on, I would ask if you could please re-flash your firmware and try the print again. Currently, we find that loosening the switch and rotating it clockwise slightly helps, or we've seen cases where exchanging the switch with one from the input drives will also help. We have a firmware release planned shortly that should also help with this issue.

    0
    Comment actions Permalink
  • Avatar
    P N

    Thanks for the advice Jonny!  I don't remember what it was like when the unit was on.  I had it powered off for the picture.

     

    I'll try reflashing ( I did have issues flashing firmware-- took a few tries before successful).  Then if it still fails, I'll wait for firmware.  I'd rather not go about moving around switches and whatnot.

     

    0
    Comment actions Permalink
  • Avatar
    Roger M

    In my case the P2 was on. As i put in  the 'EDIT' block of my last post in this topic, i was able to let the print continue after fiddling with the P2. It was on, but no blue light in my case.

     

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    I had this happen to me about 1/2 way through a print recently.  In my case the switch was engaged as the blue light was triggered on. The touch screen was unresponsive so I ended up power cycling the unit and started a different print (shorter) and now it seems to be bleeding colors, as they are not separated correctly.  Once this print finishes I'm going to re-slice in canvas and try again.

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    Hey everyone, we're working on a firmware update that should help to address this issue. I expect that it will be released in the coming week.

     

    0
    Comment actions Permalink
  • Avatar
    Redemptioner1

    Sounds like we are being used as beta testers at the moment or you have well an truly under-cooked the product, only you are selling it with a "well tested product" price tag, get you $hit together Mosaic.........

    0
    Comment actions Permalink
  • Avatar
    P N

    For what it’s worth, the light was on. Reflashing helped a lot, haven’t seen the issue again

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    So I saw that the new firmware was released today so I quickly flashed it and started my first print and had the same exact thing to happen as before.  The filament tightened down on the buffer switch, engaged the led, and froze up.  Touch screen wouldn't work or anything.  I'm attempting a re-flash now.

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    Sorry to hear that, Jim, did the re-flash help? We've received very positive feedback about the new firmware, but if you could let us know if you're able to replicate it again, it would be helpful for our team. 

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    So far so good. It hasn't happened again since the reflash. Have a 17 hour print going now testing side transitions, as that would work with my support/slic3r PE combination.

    0
    Comment actions Permalink
  • Avatar
    Redemptioner1

    Still having buffer switch jams after new firmware and full reset and re calibration. 

     

    The firmware drastically improved the colour splits and it did help with buffer switch but unfortunately 2 prints have failed around 7 hours with the buffer switch being triggered but no new filament being made. :(

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    I'm sorry to hear that, Redemptioner1. Did you notice if the screen was frozen when these failures occurred?

    0
    Comment actions Permalink
  • Avatar
    Redemptioner1

    No screen was fine, was able to cancel the print on the screen and then go through and hit clear the filament and it cut and cleared the filament in the palette it no problem so no internal jam. On the second jamming instance (different file used just in case the file was the issue) I pushed the filament back into the palette a bit and gave it a "jiggle" against the switch which triggers the lights no issue but no filament being fed.

     

    Model created in Canvas, 4 colours used and sent to hub via canvas and print started from hub. Both prints were coming out great until the jam (other than a tiny bit of stringing that canvas seems to introduce that S3D doesn't have)

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    Thanks for sharing this information, I'll pass it along to our FW team.

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    So it's still going and at around the 7 hour mark it started a couple of times tightening down on the switch and causing extruder skipping during transition purging. Is that part of the ping process? Also, I noticed this. 

    0
    Comment actions Permalink
  • Avatar
    IronHalo

    Jim Neill, does that file you are printing have a significantly long file name? My P2 demonstrates a similar screen glitch where the file name is basically blanked out like in your photo above, but it only seems to do it with extra long file names.

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    Yes it is, as most of mine do since I suffix them with slicing parameters/settings. Thanks for the heads up though. It seems to also effect the progress bar.

    0
    Comment actions Permalink
  • Avatar
    IronHalo

    @Jonny do you know if this display issue with long file names already on a bug report list? Seems to be very repeatable on my end. Haven’t figured out what the length tolerance is before it makes the display go wonky. Thanks.

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    @Jim Neill, pinging shouldn't cause extruder skipping, but are you seeing issues with your print overall?

    @IronHalo, I don't believe this is on the list yet! I'll be sure to pass this along.

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    Around the time that this was happening at that 7 hour mark the was some color bleeding that looks to have corrected itself. To elaborate on what I saw, the hot end moved off to the side and started purging. The filament triggered the switch inside the buffer zone turning on the led. The extruder was still feeding so the bowden tube started to get tightened and then the buffer area started to slack up on the filament and push more into the buffer. At one point during one of these instances it didn't seem like the palette 2 was going to recover si I pushed the input filament a little and it fed the buffer and moved on.

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    Thanks for this information, Jim. I'll pass this along to the firmware team to see if this is a known issue.

    0
    Comment actions Permalink
  • Avatar
    Jim Neill

    So I have been able to repeatably see this bowden tension jamming happening.  The cause of the problem appears to be during short color transitions.  The filament gets through the splicing core and while it is cooling the filament down (that's my assumption of what's happening; the fan comes on) the buffer gets used up during the side transition and then locks down on the switch until the cooling timer finishes and then the buffer gets refilled.  The issue is that the printer never stops/pauses, so the filament starts stripping until the tension is released to the buffer again.

    0
    Comment actions Permalink
  • Avatar
    Jonny Yeu

    Thanks for sharing this, Jim. What's the print speed that you're using when this occurs? If you have a lot of short splices in a print, it may be best to reduce the print speed to help avoid this issue.

    0
    Comment actions Permalink
  • Avatar
    dkoloms

    I have had the same issue on a couple of prints.  The only difference is that the light is on.  The filament is pulled tight and can't feed the printer.  This causes the print to fail and then it is very difficult to remove filament from printer.  This has occurred in the middle of a print but more often at the end of a print.

     

    Any help would be appreciated. 

    Using a Palette 2 Pro

     

    Debra 

    0
    Comment actions Permalink
  • Avatar
    Manmeet S

    Hey Debra, could you let us know a bit more about your setup and if you are printing in Connected or Accessory mode?

     

    0
    Comment actions Permalink

Please sign in to leave a comment.