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submitted 4 days ago by [email protected] to c/[email protected]

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[–] [email protected] 6 points 4 days ago (1 children)

The plastic will be grounded up and re-used, that's 100%, but it still requires quite a bit of virgin pellets to be mixed in. Here's why:

Used plastic is dirty. Even if it just came off the belt as a brand new part, it already has dust, oil and other residue. Just a little bit, but it's not as good as a virgin material.
You cannot grind down parts into perfect pellets, and that will cause feed rate variations.
Additives inside like dyes degrade when heated. Multiple extrusions will change product appearance.

[–] Kvoth 1 points 3 days ago

This, unfortunately much of what is given to a recycling plant is still ultimately thrown out, there are some exceptions, metals for instance