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Nozzle Difference Error - print cores (UM3/S3/S5)


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Posted · Nozzle Difference Error - print cores (UM3/S3/S5)

@Navin2020 reported this error in another unrelated topic.  I'm starting a new topic.


Do you have a 3dsolex core?  One of your core's is slightly longer than the other.  Maybe try swapping them (always have the one that used to be in the left core instead in the right core).  Maybe one isn't seating properly.  If you have some high temp grease add a tiny bit into your print head where the metal fork holds the cores.  A tiny bit of grease - the size of an ant's head.  In the bowl shape area of the forks.  Both bowls (one for left and one for right core).

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    Posted · Nozzle Difference Error - print cores (UM3/S3/S5)

    By the way you can have the log file sent to the USB and then bring it to your computer and examine it.  The height difference is displayed.  I think maybe 0.5mm is the max difference allowed?  Or maybe it's 1.5mm - I forget.


    I think I remember - the right core should stick down 1.5mm farther than the left core (when down - when in printing mode) with a tolerance of 0.5mm.


    It's possible to edit that tolerance - pretty easy if you are comfortable with linux and ssh but if you introduce a typo you'll have to unbrick your printer with a uSD card (or get an olimex serial cable).  Also your edit will get lost on the next firmware upgrade.


    It's also possible you printed a lot of abrasive filament (like glowfill or carbon fill) and that your nozzle tip on your core is .5mm shorter now and you may have just not noticed yet.  You might just need a new core.

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