Wow, if you believe the hype, PolyMaker has produced a PLA #3dprinting filament that is carbon-negative to produce. And supposedly it's as good as regular PLA, but just a little bit softer.
https://www.fabbaloo.com/news/polymakers-deep-thrust-into-carbon-negative-3d-printing
@squaregoldfish yeah, just having the cardboard spools is a big win. I kind of wish the other models of filament did that too.
@cuchaz Very interesting. Even the cardboard spools would be persuasive on their own...