![]() The abrasives in the filament can wear this coating down and while it is safe for food to contact like on a frying pan, the worn down products are not. New nozzles can come with a coating (often PTFE) to prevent blobs from sticking. This does not take into account material impurities. Some soap and water with scrubbing is enough to clean most of it out and a quick wash with a bleach solution can bring it up to almost medical standards. Additionally, it's not nearly as porous as initally expected. Some testing shows that the layer lines are big enough that bacteria don't hide inside as much as expected. There's a lot of uncertainty around the process of additive manufacturing. While PolyLactic Acid (PLA) and Polyethylene (+Glycol) has been classified as Generally Regarded As Safe (GRAS). I have been summoned! Wait! It's changed! Non-reddit communities are listed in our getting started guide We welcome community contributions to this wiki! Related Communities Hit the report button or message the mods NEED HELP? WE HAVE A WIKI!
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