Welcome I have 3d printer Vertex and I have such issue. When I’m trying to print something i have structure of printing like on photos below. I thought that it’s fault of extruder (header and motor) so I replace onto net the same type. But it is occuring also. It causes that structure is very weak and easily can be broken. I do not what should I do could you help me?
imgur.com/yXjyGFM
imgur.com/a/cTs28
imgur.com/a/nBtmG
imgur.com/a/yR1h7