I got struck by ribbing issues which I never encountered before and I'm unsure how I'm going to solve this. What I did was try to check on which acme rods that I used and it is TR8*8 (I think?) with 8mm lead per revolution, put 400 steps/mm on 1/16th microstepping, used 0.2mm layer height during printing which was actually the optimal layer.
Here is the series of images about the ribbing issues I'm having [
imgur.com].
I also gone back to the aluminum spring coupler and printed the square tower, still the ribbing occured. I am using the slic3r pe 1.39.1 for that. The file for the square tower was used again.
Can it be due to not lubed up for the acme rods?
I would appreciate if there's any solution to this problem.
Thank you in advance.