Hello, just recently got a Anycubic Predator delta style printer and I am at a loss as to what is causing this strange artifact on the surface of my prints. Any help would be appreciated. Speed: 60mm/s Height: 0.2mm Walls: 2 Solid top: 3 Solid bottom: 2 Infill: 15% Cubic Material: PLA Nozzle: 0.4mm ...