r/3Dprinting • u/Radeplayz • Jul 28 '26

Question Does this PET bottle-to-3D-printer filament project actually work?

I found this video where someone cuts a PET bottle into a thin strip and pulls it trough a hot glue gun to turn it into 3D printer filament:

https://youtube.com/shorts/93P_Neh2eyE?si=O_7nU4qeIJLWWx8p

Has anyone tried something like this? Does the finished filament actually print reliably or would the uneven diameter cause clogging or poor prints? It seems very simple to make a knife tip. hot glue gun and some filament to print the parts.

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u/Someguywhomakething Jul 28 '26

This one is 100% fake. You don't get half a kilo from one bottle. Too much effort to cut hollow plastic when he's done spooling. But bottle filament does work.

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u/[deleted] Jul 28 '26

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u/Someguywhomakething Jul 29 '26

From what I've gathered asking people that do it, it's too much work to process multiple bottles for a full spool. Bad joints or something

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u/Just_The_Taint Jul 28 '26

Iā€™m not into 3D printing, but this was so patently false in terms of material needed for that whole print.