Boundless 3D's Four-Key Macropad Is Print-in-Place — Thanks to Conductive Filament and an AMS
Pseudonymous maker "Boundless 3D" has been experimenting with conductive filament for fused filament fabrication (FFF, also known as FDM) 3D printers — culminating in the creation of a four-key print-in-place macropad.
"Conductive filament is one of the more unique materials you'll come across when you 3D print," Boundless 3D says by way of introduction to his recent experimentation, "but it's rarely used. I think a large part of that is there's not many designs that actually take advantage of that conductive property. So, let's see if we can change that."
Conductive inks mix an electrically-conductive material with ink to allow you to draw circuits; conductive filaments likewise mix an electrically-conductive material with PLA or another 3D-printable plastic to allow you to print circuits directly. They're most useful in a printer with multi-material support, but can also be used with manual material changes and careful design — but a circuit made...
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