3mm VS. 1.75mm ABS Filament . Which one is better?

Hello,

Need some advice - 3mm versus 1.75mm ABS Filament . Which one is better?

Thanks !

1.75mm lets you build a smaller lighter extruder but is more expensive than 3mm.

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[www.hydraraptor.blogspot.com]

Hey,

Oh, ok, so it all really depends on the nozzle diameter, and using a smaller diameter nozzle will gain higher resolution?

It has nothing to do with the diameter filament you are using?

Thanks !

Yes the resolution is the same. You simply have to feed the 1.75mm faster, but with less force to get the same flow rate as 3mm. It is roughly the same as adding more gearing but without backlash.

Smaller nozzle diameters get better resolution but the force required to extrude goes up as a fourth power law, so it gets impractical below about 0.2mm. Also the build speed goes down as a square law so it takes an impractical amount of time to make something big with high resolution.

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[www.hydraraptor.blogspot.com]