If you want to improve the surface quality of your 3D prints, you may want to try the ironing feature in Cura. Ironing is a process that smooths out the top layers of your print by moving a hot nozzle over them without extruding any material. This can reduce the visibility of layer lines and create a glossy finish.

However, ironing can also introduce some artifacts such as seams or gaps between the ironing lines. To avoid this, you can use the Monotonic Ironing Order setting in Cura. This setting orders the ironing lines in a way that adjacent lines are always printed overlapping in the same direction. This makes the ironing process more consistent and reduces the chances of creating unwanted marks on your print.

To enable Monotonic Ironing Order, you need to first enable Ironing in Cura. You can find it under the Experimental section of the settings. Then, you need to scroll down to the Ironing subsection and check the box for Monotonic Ironing Order. You can also adjust other ironing settings such as ironing pattern, flow, speed, and acceleration to suit your preferences.

Monotonic Ironing Order is a useful setting that can enhance the ironing feature in Cura and help you achieve smoother top layers for your 3D prints. You can experiment with different settings and see how they affect your results. Happy printing!