I change my guide because I did not want my feeder disassembled each time, this one goes the same during operation of the UM2.

j'ai modifier mon guide car je ne voulais plus démonté mon filament à chaque fois, celui ci ce monte meme en cours de fonctionnement de l'UM2.
I actually semi flex matter, because as it has no mechanical contraine, it really serves as a guide