Thank Tomnagel,
but if I'm using a clay extruder with a nozzle having a round shape, i cannot consider a rectangular shape.
In this case the second equation should be more precise because I have ha cylinder. Also, In my opinion the equation should works also if I'm printing not in air.
What is the difference if i'm printing a more o less perfect cylinder on air or if this cylinder is used to build a 3D object ? Briefly, even if after printing the cylider changes is shape, the amount (volume) of printed material should be the same.
Of course the 3D object will have a different volume than the printed material.
Thanks
Food24.
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tomnagel 126
Your calculations are both right. The slicer uses the first method because that approaches what is happening when printing. The nozzle prints a line with a more or less rectangular cross section (line width x layer height).
The second method is only valid when you would calculate for printing in air.
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