3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: [email protected] or [email protected]
There are CAD communities available at: [email protected] or [email protected]
Rules
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No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
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Be respectful, especially when disagreeing. Everyone should feel welcome here.
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No porn (NSFW prints are acceptable but must be marked NSFW)
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Do not create links to reddit
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If you see an issue please flag it
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No guns
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No injury gore posts
If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![](URL)
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Microplastic speed run
Do you really thing that coffee grounds brushing up on something sheds significant amounts compared to like all the plastic you touch and then eat after not washing your hands? Or the Teflon in the rain on our crops? or storing food in plastic containers particularly during heating or freezing?
I'd be more concerned about takeway coming in shitty plastic containers that stain (indicating mixing on a molecular level) than coffee grounds touching a piece of PLA.
Yes, absolutely. Coffee grounds rubbing up against rough 3d printed plastic is going to act like little grinders pulling off bits of of plastic directly into the grounds.
Not to say that we all haven’t already lost the microplastics speed run. I am concerned about the things you listed, but yeah, I wouldn’t want anything 3d prone to be so close to so many small hard moving pieces of food.
3d printed plastic isn't much worse than other plastic. The grinds aren't under any force.
Have a look at a printed part under SEM and you'll see it's quite smooth and cohesive. Coffee grounds are light and fluffy, they don't grind plastic.
I think you're not basing this on any scientific investigation.
He could just run a flame on it to melt whispy plastic strands down