#3499 Surface not smooth, surface filling problem

We advise you to put the external filling in “rectilinear” and not in “concentric”. Then, increase the material flow (process-Extruder->extrusion multiplier). If you still have visible channels between the deposited wires, then increase it in 2% (0.02) increments. Increase this until you have the desired fill. Also slowing down the printing speed will give a better filling.