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Comment on CNC Kitchen Made 3D Printing Filament from Plastic Cutlery

I’m not an expert, but plastic degrades. It still needs new plastic in the mix to keep its material properties. Not all plastic is suitable for everything either, and not all can be recycled.

I do agree that it would be awesome, but don’t think it’s feasible in the near future.

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nilloc@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago
It might become feasible for certain types of plastic. #1 and #2 (PET and HDPE) are easily cleaned and remelted.

ABS can offgas butadiene (the B) and is pretty cancerous.

PVC can lose the Chloride and that’s deadly too.

The polystyrene is too bulky to make sense recycling in low quantities without big compaction equipment. But apparently can be profitable if you can offload the compaction and collection costs to sellers or consumers. Otherwise recyclers don’t touch it.

We really just need to outlaw using most difficult to handle plastics for one time use.

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- Bananigans@lemmings.world ⁨1⁩ ⁨year⁩ ago
  You can at melt polystyrene down with acetone for compact storage and repurpose it as glue. It’s an option at least.
  
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  - nilloc@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago
    Mmmmm VOCs
    
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    Aux@lemmy.world ⁨1⁩ ⁨year⁩ ago
    Cooking on a gas stove produces so many VOCs that any plastic melting will cry in the corner. Yet many people still cook on a gas.
    
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kent_eh@lemmy.ca ⁨1⁩ ⁨year⁩ ago
Yes, and he demostrates that in thw video.

Steffan added a small percentage of virgin plastic to his re-grind material and the result was stronger than just the original plastic material before grinding/extruding.

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