A compensation of 0.025 is set to compensate for the outermost part. This only works when printing the outer wall after the inner walls.įor example: A line width of 0.35 with a 0.40mm nozzle leaves a gap of 0.05mm on both sides of the actual printed line. Moving the outer wall slightly inside causes the nozzle to overlap with the inner walls, forcing the material in the location adjacent to the inner wall. When the outer wall is printed with a smaller line than the nozzle size, the material can flow outward more than the desired line width, making the print wider than desired. The aim of this setting is to improve dimensional accuracy when using a line width smaller than the nozzle size. This setting causes the outer wall to be moved slightly more towards the inside. It is visible in the layer view by short travel moves right over the outer wall. This results in a reduced seam when traveling from the outer wall to other parts of the 3D print. Outer wall wipe distanceĪt the end of every outer wall, a short path is traveled without extrusion.
The model on the right has a value of 0.2mm, reducing the number of transitions but increasing the transition length. The model on the left has the default 'wall transitioning filter margin' of 0.1mm. However, long transitions and line width variations might lead to under- or overextrusion problems. Increase this margin to reduce the number of transitions, travels and print start and stops. The transition between these widths can be done over a short distance or over a long distance. When printing variable line widths, the lines need to transition from one width to the other. The model on the right has a setting of 10°, the bottom part has no line transitions. The model on the left has the 'wall transitioning threshold angle' set to 25°, allowing line transitions. Increasing this setting will negatively impact visual quality, while allowing sharp edges to be printed.Įxample: This 3D model has a sharp edge of 20°. All sharp edges of 3D models that do not meet the threshold, will be printed without line transitions. This setting controls transitions of printed lines in sharp angles in models. The model on the right has a 'wall line distribution' of 3, printing all inner walls with adjusted line widths. Increase this setting when printing multiple inner walls to divide the wall line widths equally, as in the thin parts of the 3D model below.Įxample: The model on the left is printed with a 'wall line distribution' of 1, keeping the line width of the outermost inner wall as close as possible to 0.4. When a printed line width needs to be adjusted to fill the gaps between walls, this only happens on the inner walls of a print, to keep the outside wall as smooth as possible.
Note: Ensure the ' wall transitioning threshold angle' is set correctly, or this setting will not directly show on the model.Įxample: The left model has a value of '2mm', the center model is the default of '0.4mm' and the right model has a wall transition length of '0.1mm'. The impact of this change is mostly visible in the thin parts of this 3D model. The wall transition length allows to specify the length of each part, before the lines are potentially split again. To fix this, the wall line width needs to transition between the number of walls required to fill the model. In some cases, the model walls cannot be printed with the regular line width, when the model is too thin. The model on the left has three walls, the model on the right has two walls. When you set the wall line count, the wall thickness is calculated and will grey out.Įxample: A value of 1 mm, results in three walls of 0,35mm = 1,05mm wall. Instead of setting a thickness in millimeters, you can also set a number of walls. A higher value will create a sturdier model and decreases the chance of leaks, while a lower value can significantly decrease the print time and filament costs. In general, a wall thickness of two or three times the line width is sufficient. Ultimaker Cura rounds the wall thickness to a multiplication of the line width. This setting adjusts the thickness of walls of the model. It can be set for the inner or outer wall separately.Įxample: Use two colors of the same material to create outlines on 3D prints. This setting defines which extruder should print the walls.
The top/bottom settings can be found here. Note: Shell and top/bottom settings are separated into two categories.