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Re:Programmable Filament Gives Even Simple 3D Printers Multi... by rkagerer on Saturday October 31, 2020 @01:29PM (#24953371)
The approach in the article is novel, but multi-filament splicer/feeders like the one you linked seem much more convenient.
Re:Programmable Filament Gives Even Simple 3D Printers Multi... by moepstar on Saturday October 31, 2020 @01:41PM (#24953511)
If they'd work decently - ask people who have them, i "know" at least two on a 3d printing discord and what they have is basically a pretty expensive paperweight...

I once saw some video about the buffer and the way it is flawed - also don't expect any print speed if you're using it :S