Cura Questions - Nozzle Diameter VS Line Width

Todays cura question is about nozzle diameter and line width. see how this effects you #3dprint, today on the technivorous channel

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[GreenAppelPie]

I have found silk PLA filaments expand a lot more than plain PLA, and have slightly different profiles for them, mostly in horizontal expansion.

[hubert]

Shit.. THANK YOU MAN, You just figured out my recent problems with the printer

[boboscurse]

What should line width be for .2mm nozzle for fine detail like text?

[randomdamian]

THANK YOU SO MUCH! I was so confused because I always thought that nozzle = extrusion diameter

[cyfercruss]

Do i have to recalibrate the flow rate after change of linewidth?

[Lattenbreaker]

It is indeed possible to print in thinner lines than diameter. Properly adjusted one can print finer details. Whatvare the issues you are mentioning, can you go into details please?

[bwselectronic]

I am new to 3D printing. There's not much information about centering your print on the bed. They talk about changing in Marlin and recompiling. What's a way to center the print in Cura. I'm using the Ender-3 profile on an Ender-3 V2

[hi-lineprecision.]

So if my flow is spot on and a single wall is the same size and my nozzle is that the most dimensionaly accurate way to go?

[sierraecho]

I disagree with your assessment.
Line width is a simple distance between two lines within the same layer. Line width is not extrusion multiplier. Those two settings work together. Line width tells your print head the distance between the lines (in the same layer) while extrusion multiplier squeezed enough material out to fill those lines. You can increase your extrusion width to even over 200% if you print slow and your nozzle ´has a large enough flat area. I usually print sorting boxes for example with a 0, 4mm nozzle at 200% so around 0, 8mm wall thickness. Which mates the parts much stronger and prints much faster while keeping the same quality since it´s just one line. Same can be applied to vases and other similar geometries for faster and stronger prints without compromised the overall quality.
Having sad that, an important factor to consider is layer height. It´s a big difference to have a extrusion width of 0, 6mm and a layer heigth of 0, 2mm or 0, 1mm with 0, 1mm the squish and the forces inside the extruder will be much higher.
Many people claim to have great results with extrusion width lower than nozzle diameter, this is because the extrusion multiplier is still much higher and material still squishes to the sides.
You physically can not print with an extrusion width of 0, 3mm and layer height of 0, 3mm because this would mean that you will get a perfect circle in cross section.

[hendrikjbboss]

Why don't presenters refer to the version of the slicer software in the heading? For those presenters that's a fatal flaw. 5 MONTHS AGO the then current version of Cura was 4.3!!! In Cura 5.3.0 the settings and the UI has changed.!!!

[miletinic]

And CHEP goes lower than 100% of nozzle size :)