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I know I should use different nozzles for filaments that use vastly different temperatures but what about filament types that use similar temperatures?

For example, PLA and PLA composites like ColorFabbs Woodfill. Should I use a separate nozzle for that?

1 Answer 1

There is absolutely no reason to use different nozzles, not even if filaments do require different temperatures.

The only exception is when printing abrasive filaments (such as glow-in-the-dark and carbon-fiber) in which case you should use an abrasion-resistant, stainless steel nozzle. This nozzle can also be used to to print "regular" filaments but a regular brass nozzle has slightly more favorable properties if you do not require abrasion resistance.