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UM2 part for original feeder for flexible filament

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I just published a modification of the original feeder UM2 to use flexible filament.

The explanation is in French, but it is so simple that the pictures explain everything.


With the filament Taulman Bridge or PA6 filament work any good.

I have not tested the NijaFlex.


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Can you explain how it work? how this modification help to use the flexible materials?

Thank you



if you try to put a flexible filament in an original UM2 feeder, you will see that the filament passes behind the wheel of the feeder, because there is no guide.

The flexible filament always escapes by this empty gap.

This part prevents this, and the filament stays in a good position.


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