Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4440886.
I had a few prints in a row get kinked and knotted up at the extruder (Image 3). After watching for a while, I saw alot of filament play between the gear and Bowden tube entrance while completing quick retractions.
I designed a little support piece that threads upto the coupler. While adding support, It also makes it easier to swap filament.
Printed M6 Threads at 0.08 mm layer height.
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5 mm threaded length
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5 mm OD.
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3 mm ID
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10 mm total length
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I would print a few at once, allowing them to cool properly.
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I would recommend randomizing you Z-seam. With such a small part, Z-seam on one side might have cooling issues.
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Need to disassemble your extruder to thread it in.
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If you require a shorter or longer version, comment, its a simple edit/upload.