Not sure what to call these, but i seem to get them on anything i print without support that has a gradual overhang. I attached a couple photos to show the issues–the red and black parts are separate pieces, i just set the black one on top to take the picture.
EDIT: I MAY have figured it out, still need to test further. I was printing a big print the other day and the printhead cover with the fan fell off and the print failed. I thought i had pushed the fan plug all the way back in, but just tested and the fan wasnt running! So i reseated it, and the fan started right up. So im pretty sure this was a cooling issue.
