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Filament Diameter - Does it do anything or not?


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Posted · Filament Diameter - Does it do anything or not?

Cura 4.5 with an Ender 3 Pro.


With the default 0.16mm profile I get the same gcode generated regardless of what I set the material diameter to (tried with at least with 1.70mm vs 1.75mm).


A quick search shows many have the same issue. On the other hand, many confirm that it does make a difference in the E values generated. Do we know why there's a discrepancy here?


I have calibrated my flow anyway, so I suppose this doesn't (or even shouldn't?) make a difference really, but I would like to know whether there is any value in measuring an average filament diameter when using a new filament if it doesn't actually do anything.

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    Posted · Filament Diameter - Does it do anything or not?

    I may have figured it out - the diameter makes a difference for certain printers. The generated gcode is different when using a Ultimaker 2 for example.


    This doesn't explain why it doesn't make a difference in other printers, but if a calibrated flow ultimately overrides filament diameter then I guess the question is moot.

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