Consider trying PHA filament!
Consider trying PHA filament!
There's nothing super special about this print in particular compared to what people usually post here, just a simple Santa figurine requested by a makerspace patron. However, it's made from 100% pure PHA (polyhydroxyalkanoate), a natural polyester byproduct of common soil bacteria. Unlike PLA, it is fully home compostable. It can break down in any biome, in a very reasonable timeframe. Also unlike PLA, you can make it by feeding the bacteria stuff like old fast food fryer oil, and other waste products. The print settings are pretty similar to PLA, but it has some significant differences in material properties, like being less brittle.
There aren't a whole lot of people making 100% PHA filaments, but if you can find it, definitely give it a shot! It's our staple filament at the makerspace I work in. Hopefully this doesn't sound too much like an ad or something, I just really like this stuff and want it to catch on.
Oh also! The flexible version looks and feels really neat if you run it through a vibratory tumbler:
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Looks interesting. My primary focus is on engineering materials, but I'd love a truly biodegradable draft filament and I'm willing to put in a bit of time working out how to make it work with my equipment. Looking at Colorfabb's site, it appears they only sell it in 750g spools which is incredibly frustrating considering my intended use. For a draft filament, the bigger the roll, the better!
Even for non-draft, 3kg+ or bust! I tend to make bigger prints and running down spools is a pain.