Hi Mrtn. I'd assumed I had some kind of sharp edge around the captop frame, because the fibres are always caught at the same point (..the nearest right-hand edge of the frame, when viewed from the front). I'm using the felt wiper that came as a spare with the machine, so I presume its a Roland item. (..now that I think of it, I'm fairly sure this issue didn't arise until the replacement felt was fitted). Maybe I'll try switching it for another.mrtn wrote:OEM felt wiper does not release fibers, not even when very old. These fibers are from the environment or canvas you use (if you do).