Hi.
I can’t solve that problem.
When I print a tube with little diameter, I have issue on surface just as you can see in pictures.
In this case, I have done with spiral, but in normal mode and different thickness I have the same.
I don’t know how to solve.
Looks like one side is melting and the other isn’t?
If this is the case, try to increase the speed of the part cooling fan and maybe decrease the heat bed temperature below the glass transition temperature of the printed material (if it’s currently over it)
Reduce the print speed as well! This should solve your problem.
Perhaps your filament is not able to cool down, befor the next layer will be print on it. Many years ago i have same issues with my CTC, as i try to print very small objects.
Solution for this was to put one or two walls beside and put my small object in the middle of the walls. The filament has gain time to cool down and don’t melt as the next layer will extrude on top of the small object.
Did you print only one part or all parts together with layer by layer mode?
If just one part, try the other way.
