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Retracting a blob


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Posted · Retracting a blob

My Ultimaker 2+ keeps jamming and I find that there is a bob of material stuck in the end of the Biden tube. It’s like there is an excess of melted material just below the Biden tube and when it retracts it pulls that blob into the tube creating a jam. Has anyone else had this problem? 5C5B16E1-117B-4F50-8D03-5BB3A17C1F9B.thumb.jpeg.9ac57c7c79a47b427f5ff82332da9960.jpeg

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