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Printing guides and calibration resources for Palette 3

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Dropping pings on every print

I have yet to get a successful multicolor print other than the calibration file. Every time I print it stops after a few hours and says it lost too many pings. The last time I had 98-102 for every ping and then out of nowhere it dropped to 40 and then 0 and the print stopped. Does anyone know why every time I use this printer (with different files) I can’t get it to complete a full print? I’m using an Ender 3 Pro if that matters.

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Hi @michaelc1011, really sorry to hear this happened. Pings can drop for a number of reasons:

  • Poor splices can affect extrusion. If a splice is thin or necking, it will have trouble being gripped by the extruder. If a splice is thicker or bulging (>1.8mm), it can get caught somewhere along the filament path in Palette or have a harder time driving through the printer’s extruder. Both can cause the pings to drop. To troubleshoot splices, you can read more about how to fix this with splice tuning.
  • A clog or some sort of obstruction from the extruder to the hot end.
  • Filament breakage inside Palette, or unable to feed filament from one of the inputs. If you noticed there was no filament inside Palette just passed the splice core or near the outgoing drive, it’s possible the filament broke there and the printer used up the remaining filament but no further splices occurred.

These are some different reasons why this could happen. If you observe it happen again, please take a photo of the Palette unit without it’s top cover, and observe where filament is from the Palette to the extruder.

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I noticed the most recent time I tried the extruder kept slipping (I'm thinking the splice may have been >1.8mm like you mentioned.) I've never had an issue inside the palette with broken filament. It seems to be happening shortly after a switch to a new color so I'm thinking it may be a splicing issue, my settings are still set to the default. What I don't understand is that it doesn't seem to be an issue with shorter prints. I managed to print one file consistently that is comprised of 3 colors but isn't as tall as the others I am trying to print.

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@aordono , Am I understanding then that a drop in pings (i.e., failed prints) are tied exclusively to the quality of a splice and the flow rate through the extruder?

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@michaelc1011 Approximately after how many splices in the print do you find that the extruder starts slipping? And if you are using Canvas, are you able to share the project and settings with us to support@mosaicmfg.com?

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@dr_c Yes drops in pings relate to splices and extrusion. A print can fail because of air printing and as pings drop to 0%, Palette will stop the print (error 134). A poor splice which is either weak, or larger than typical can have trouble feeding through the extruder. The scroll wheel on Palette just before the output is what measures the filament as it passes through the unit, and the pings are checkpoints throughout the print monitoring the extrusion.

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@aordono how can I check how many splices have been conducted before it fails? Is there a way I could schedule a troubleshooting phone call? I have yet to get a success print with the palette.

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I’ve caught the extruder starting to slip on the filament a few time today on a 52 hour print. I intervened by simply grabbing the filament and giving it an extra push past the splice point to successfully continue printing. I came back from dinner tonight to only find that the palette thought it was best to cancel the whole print after a bit of slipping due to error 134. Not cool! I do not agree with the logic. Please pause the print… not stop the print :(

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Hi @blendtec, I'm so sorry this happened. I'll share this feedback with the team to see if there can be a pause instead of a full cancellation, and explore if there would be ways to save the print if a pause is possible.

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hi! @aordono any news on this, it's very frustrating to have to keep restarting because the palette stops instead of pausing - thanks

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Honestly, After many successful prints, I think it is related to the filament. I am thinking that certain filament splices don't mix well. I'm going to stick with filaments that have a higher splice success rate for larger prints. PLA+ and Silk PLA mix fine together. Wood Grain and Silk PLA, the splice will jam the extruder (either the feed or the heated extruder).

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Author avatar Michael will be eternally grateful.
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