Not sure
some have more than one type of filament installed at a time but I don't have one of those so I can't say how they work.
From a quick google they have more than one extruder so you can print each type individually or mix them up.
To give you an idea of how quick this is, normally the little benchmark boat takes about an hour to print.
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My Name was saying these words inside your head on, Sat 1 May 2021, 0:12,
Reply)
Yeah, multiple extruders are so you don't have to change filament part way through a print, so you can use different materials or colours
but the extruders are not usually used at the same time, and on cheaper machines they are mounted on the same print head.
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Happosai _,,,,_(O ; o)_,,,, Sat 1 May 2021, 0:22,
Reply)
There are multi-headed 3D printers, but they're usually for printing large items.
They're not really practical for a small item like this as they'd get in each other's way.
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Happosai _,,,,_(O ; o)_,,,, Sat 1 May 2021, 0:18,
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I can imagine the material being deposited creates a limiting factor or at the very least an unwieldy print head
unless you could deliver the material faster with a multidirectional nozzle in a controlled manner.
(, Sat 1 May 2021, 0:28, Reply)
I read an article about that recently
www.imeche.org/news/news-article/morphing-3d-printer-nozzle-enables-complex-new-creations
Presumably still in experimental stages at the moment. Of course, "The team is also in discussions with the US Department of Defence about using the morphing nozzle to support the production of weapons" because obviously that's the priority.
(, Sat 1 May 2021, 10:46, Reply)
Depends on whether it would reduce costs and overhead for the department of defense.
Then they could reduce their budget*
*for weapons, while increasing the budget for weapon making machines and companies by a higher amount
(, Sat 1 May 2021, 16:25, Reply)