Quote Originally Posted by 3DMed View Post
I seem to be having the same problem. My first layer starts to ripple in a rectilinear infill with my extrusion at 150, temperature for PLA at 230, and the layer at .4mm. my fan is off and when the fan is on it still doesnt help. What could I do to help with these ripples on the first layer?
My issues with this come and go. Do you have autoleveling? I haven't determined the exact singular cause but I've found that being perfectly level (autoleveling solves this) in combination with no 'over extrusion' usually cures it for me. Could you be pushing out too much filament? Have you done a very careful extrusion calibration? There are some good guides for that here and on the web.