As Sander mentions, maybe the filament is too thick and therefore has trrouble moving through the bowden tube... Did you try measuring it with calipers? It should be no thicker than around 2.9 mm. in diameter...
If you open your feeder (unhook it so it dosn't grab hold of the filament) can you extrude manually by pushing the filament up through the tube? (hotend needs to be warm obviously)
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SandervG 1,519
Hi @Rey28, thank you for your post and welcome to the forums
Looking at your edit, I assume you have an Ultimaker Original+? Other materials beside the red ABS and PLA white do work fine, it is really these two?
If so, can you post a photo of the tip of the material? Is it pointy, or thicker than the rest?
Is it just the remaining part of a reel, or is the reel still (half) full?
Thanks!
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