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: !functionalprint@kbin.social or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
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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No Ads / Spamming / Guerrilla Marketing
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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 
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Honestly, I love 3d printing, but I still worry about microplastics in the environment.
It's complicated but PLA is bio-degradable ... eventually. Not months but years. That's much better than the horrors you see on Blue Planet II.
PLA requires industrial high heat composting to breakdown. Otherwise it will be around as long as any other type of plastic.
Is this true also for microplastics? I am aware of the marketing claims and the helpfull oversight of the needed bioreactor but i thought that was in part due tl the larger pieces. Wondering about micro
I’m not sure how much sooner it degrades, but the study still suggests that it causes cellular damage before it’s able to degrade.
Honestly, how much of the 3D printed crap ends up in landfills? It's the summum of our low quality, fast-creation, use once (twice?) and throw-away culture. This has to be one of the least eco friendly ways of product creation.
There is a different side to this equation too. Locally sourcing production. There is no surplus stock that needs to be thrown unopened. No shipping of some part that solves some particular problem. Replacement parts can be made for things that would otherwise be cheaper to buy new and dump the old one, etc.
I used mine almost exclusively for repairing things that are either impossible to get (parts for an old blender, or window blinds that are otherwise in fine condition.
I also use it to print templates for fabrication, which saves the production of steel since I’m often able to make something once instead of throwing away much more energy intensive prototypes in the design process.
That said, my printer lives in a shop workspace, and has an enclosure, though not a filtered one (yet).
Well, it isn't so much as that. It's more of a "crap, my bed isn't leveled", or "my nozzle got clogged", or "the filament wasn't dry enough and broke", or the filament got tangled, or some other random print fart issue that causes multiple printing issues sometimes. There's also some situations where the design doesn't work and you have to go back and make another design change or iteration. All those attempts create waste plastic, and while I recycle my scraps, I'm not sure how many who are going into this hobby do.
It goes beyond this to the things people print. There's a lot of... low shelf life dudads turned out by a subset of our community. For example, a coworker printed each of the ten of us a 4" tall Groot as a holiday present pre-covid. I bet most of those wound up in the bin. I totally get the hobby of collecting trinkets, but often wonder about the end state - it will all eventually need a new home or will end up in a landfil.
Plastic recycling is a fine idea, but in many cases the material winds up getting shipped overseas and burned. It's also the least preferred option of reduce, reuse, recycle. It is cool that some filament companies are now accepting scraps, but that's not very common (yet?). I also wonder how they deal with contamination. Sorting the different plastic types is difficult today from my understanding. That and low resale value is why plastics recycling is struggling.
All that said, I am a massive believer in functional prints. You can breathe new life into existing things and the things you create can be here for a long time.
You can recycle your filaments. This is an incredible way of creation.
You can also just put all of your failed prints in a bag, and say you're gonna recycle them. But really you keep running out of bags because you're lazy.
Hmm I didnt know you could recycle filament. That is certainly positive. So that would mean you could take a 3D printed object and melt it down (?) and make something new out of it? Is it infinitely recyclable or does it lose certain properties? And is that easy to do and do people actually do that? (I don't mean to sound negative, I'm genuinely curious)
This is coming from a big 3d printing nerd, but no, the average person is not able to reuse filament once it's been used. There are commerically available machines made for turning bits of filament into reusable filament, but the process is incredibly difficult to manage on a hobby scale (you need to make sure your scrap is completely free of any debris or your filament will cause nonstop jams and clogs), the machines are very expensive, and you need a ton of scrap to get a usable amount of filament. I think that there are companies that offer recycling as a service, but again I can't imagine it being viable on a hobbyist level.
I recognize that plastic waste is obviously a huge issue when it comes to 3d printing, and I agree that some aspects of the hobby can be deemed wasteful. One thing I think that is often overlooked though when it comes to this discussion is the reduction in shipping and handling waste 3d printing provides. Sure, I don't really need that stupid Baby Yoda print, but if I was already going to buy a little figurine or plushy or whatever, at least the one I printed doesn't come sealed between two pieces of form fit plastic, held together by plastic coated twist ties, all presented in a plastic-cardboard box with a see-through plastic window that was shipped from mainland China - all of which is getting tossed out. The total waste produced for printing the thing is measured solely in the amount of filament I used and the electricity used to keep the printer running; when you consider that most people print in PLA (which is supposed to be biodegradable) and have electricity subsidized in some shape or form through renewables, the hobby seems much less wasteful than the more popular form of consumerism (buying shit).
You can get a pellet printer as a 2nd printer, either as a modification to an existing printer or as a complete printer, and then you don't have to worry about most of the difficulties of recycling your waste. Just ensure your keep different types of plastic separate and stored in dry containers just like you would store filament. Then you just need a shredder, which are pretty cheap, and you can create small plastic chunks that will work in the place of pellets. This avoids most of the cost and difficulty associated with recycling, which largely comes from the extrusion process.
If you wind up needing to dry the pellets, its basically the same process as for filament and removing contaminants is less of a concern.
If you also do injection molding, the pellets can also be used for that.
While creating new filament on hobbyist scale is difficult, finding other ways to reuse the plastic at the hobbyist scale isn't hard. Just requires being willing to do it and a little bit of creativity.