I’m in need of some help. Here’s my issue. My printer is only about a month old. It was printing great. We had some PLA that seemed of poor quality and we had a failed print. That night, I tried printing a model with some quality PLA that I had printed about 6 times previously with stellar results. The first layers went down perfect. Over night, and probably around 50% done, the center of the model (a hexagon fidget) apparently came loose and the toolhead was banging around and making all kinds of noise. There was a massive blob. Over the next week, I managed to remove the blob, replaced the hotend and the heating assembly, and reassembled. I also cleaned the PEI textured plate with dish soap and alcohol. I started the same print again, once again over night. I monitored it until it was about 40% complete. Somewhere around the 50% mark, it again experienced a failure. This time, the print finished but left a hole in the middle. The model prints two at a time, and although the second seemed perfect, we later discovered that there is a very poor layer (or several layers). It’s almost as if the hotend is hitting the layer or doing something else to cause adhesion issues (both on the plate and certain layers). Before this print, I did run the Tramming process and printed a test layer that looked reasonably good.
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Any thoughts/help appreciated.