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Ultimaker Origonal fillament stuck between bowden tube and nylon coupler


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Posted · Ultimaker Origonal fillament stuck between bowden tube and nylon coupler

So probably 5th attempt at this piece (probably bad deisgn, i should check) but witout fail it always gets stuck, and then the filament ends up grinfding, cant go back, cant go forwards. picture of teh fillament when iremove the bowden tube. i cant imagine why there would be a gap, i always push it down as much as possible.

other images is another almost identical piece which printed just fine. will do the brim and the first layer, but always get stuck on the second layer.

5a3319f5835fa_2016-03-2014_19_13.thumb.jpg.30f9a88040fdf5f52f6b852f662ae572.jpg

5a3319f5afe24_2016-03-2014_18_50.thumb.jpg.5d47ec8b1afdd88ee4b8ec54d8084712.jpg

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    Posted (edited) · Ultimaker Origonal fillament stuck between bowden tube and nylon coupler

    The way the filament got out means that the coupler has compress itself due too much preassure (never overtight the top screws, they must be ok, but not tiiight) and the coupler has left a gap for the filament to find a way (think the hotend as a water pipe) there the filament cools down and stucks the feeder.

    UMO users take more time to notice this because the feeder it's too strong and most of the time it can overcome the gap, but the silhouette of the filament shows that there's a gap between the ptfe coupler/peek/barrel and that's the first sign.

    Take out the coupler, insert it on a filament and spin it, you will notice that

    a) it doesn't pass without friction (compression)

    b) it woobles when it spins (deformation).

    c) measure the tip of the coupler that goes into the peek and you will notice that isnt 5.1mm exact.

    d) look at the bottom of it and the filament exit might have shift to a side.

    Any of that means you need a new coupler.

    Edited by Guest
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