How to improve inner wall?

[huggibunni 0]

Hello, i have ender 3 and I use cura for setting. So I been printing my cutters using satin Pla, and the quality is pretty good especially the outer wall but not so much the inner wall. I tried changing printing speed, and i still dont know how to remove this line, I hope you can help me. I dont know if you can see in the picture but there is a line inside, please can you help me, thank you. 

[geert_2 560]

The normal procedure is to print slow, in thin layers, rather cool (because of the thin layers and slow speed), and set all temperatures equal. But it looks like you already did that, so... Maybe check if it is visible in layer-view in Cura, but not in the model in CAD? To see whether it is a printer-issue or a software issue or model issue?

 

[huggibunni 0]

Thank you, I changed the initial layer height to 0.1 and it seem to got rid of the line