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paulrhee2002

Failed print- stange residue on hot end and extruder printing above heatbed

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Posted · Failed print- stange residue on hot end and extruder printing above heatbed

Finished a 3.5 hour print and started a 2nd print.  First layer was fine but when I came back to check on the print, the z axis was way above the bed and was printing into air.

There was no more filament coming out of the nozzle so there was not a huge stringy mess of filament even though it was printing in air.  I guess the filament stopped coming out and then the z axis changed.  

There was some weird residue all over the hot end and I attached some pics.  I just shut off the machine the instant I saw it was a failed print but forgot to check what the screen said before I shut it down.

It's a tevo black widow printer with stock parts except I changed to a 1mm nozzle.

Was printing flex filament at 220 degrees

Anyone have any idea what happened and where that residue is coming from?  

Thanks for any help!!

nozzle leak.jpg

nozzle leak1.jpg

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