Can you try printing the part on a different part of the build plate? You shouldn't have this issue with fishing line, but with belts, there may be a portion of the belt that's degrading or has debris.
With a raft, which is generally printed relatively sparse, I think you mitigate the problems of printing the first layer too close to the bed. If your bed's not level sufficiently or the height's not quite right, your first layer will be squished, and you may see some excess material extending into the next couple of layers. I would think that this could cause the hotend nozzle to get caught and potentially lead to skips. At least, that was my reasoning when I had this error. I was used to seeing some early layer shifts whenever I printed at 0.1mm layer height, but they would go away if I used a 0.2mm raft.
The fact that your problem only shows up for bigger prints would indicate to me that it's either an issue with your pulley/fishing line or your bed. Even though your motors don't get hot, your stepper drivers may be getting too hot. I've read that as a potential cause on some other forums. Of course, totally spit-balling here. Hopefully someone more experienced on this forum can chime in soon. Good luck!
With a raft, which is generally printed relatively sparse, I think you mitigate the problems of printing the first layer too close to the bed. If your bed's not level sufficiently or the height's not quite right, your first layer will be squished, and you may see some excess material extending into the next couple of layers. I would think that this could cause the hotend nozzle to get caught and potentially lead to skips. At least, that was my reasoning when I had this error. I was used to seeing some early layer shifts whenever I printed at 0.1mm layer height, but they would go away if I used a 0.2mm raft.
The fact that your problem only shows up for bigger prints would indicate to me that it's either an issue with your pulley/fishing line or your bed. Even though your motors don't get hot, your stepper drivers may be getting too hot. I've read that as a potential cause on some other forums. Of course, totally spit-balling here. Hopefully someone more experienced on this forum can chime in soon. Good luck!