RE: Wavy lines / ripples in top layer
When I take the finalized print from bed it sticks to bed on whole surface. So it is not wraped. Also when trying to solve problem, I replaced nozzle with new one and recalibrated the bed. So uneven bed or wraped print isn't the cause for wavy last surface in my case. But others that reported in this topic have exact same simptoms with wavy top surface, as seen from attached pictures.
When printing one layer below last layer, that layer is almost perfect. So it must be sth. with last layer settings.
I print with 240°C and bed 40°C.
RE: Wavy lines / ripples in top layer
Does it improve if you reduce your Extrusion multiplier setting from 1.00 to say .97 ?
RE: Wavy lines / ripples in top layer
Try raising your Z just a little bit. That should fix the first layer ripple problem.
RE: Wavy lines / ripples in top layer
Try using adaptive layers. Make the top layers thin and do whatever for the remaining print.
Make absolutely certain of your first layer, show us a first layer and the bottom of a failed print if you're not sure.
If it is a large part you may even be bending the print sheet with warping so slow the print down and try a cubic fill (not grid, not gyroid).
Cheerio,