196
Community Rules
You must post before you leave
Be nice. Assume others have good intent (within reason).
Block or ignore posts, comments, and users that irritate you in some way rather than engaging. Report if they are actually breaking community rules.
Use content warnings and/or mark as NSFW when appropriate. Most posts with content warnings likely need to be marked NSFW.
Most 196 posts are memes, shitposts, cute images, or even just recent things that happened, etc. There is no real theme, but try to avoid posts that are very inflammatory, offensive, very low quality, or very "off topic".
Bigotry is not allowed, this includes (but is not limited to): Homophobia, Transphobia, Racism, Sexism, Abelism, Classism, or discrimination based on things like Ethnicity, Nationality, Language, or Religion.
Avoid shilling for corporations, posting advertisements, or promoting exploitation of workers.
Proselytization, support, or defense of authoritarianism is not welcome. This includes but is not limited to: imperialism, nationalism, genocide denial, ethnic or racial supremacy, fascism, Nazism, Marxism-Leninism, Maoism, etc.
Avoid AI generated content.
Avoid misinformation.
Avoid incomprehensible posts.
No threats or personal attacks.
No spam.
Moderator Guidelines
Moderator Guidelines
- Don’t be mean to users. Be gentle or neutral.
- Most moderator actions which have a modlog message should include your username.
- When in doubt about whether or not a user is problematic, send them a DM.
- Don’t waste time debating/arguing with problematic users.
- Assume the best, but don’t tolerate sealioning/just asking questions/concern trolling.
- Ask another mod to take over cases you struggle with, if you get tired, or when things get personal.
- Ask the other mods for advice when things get complicated.
- Share everything you do in the mod matrix, both so several mods aren't unknowingly handling the same issues, but also so you can receive feedback on what you intend to do.
- Don't rush mod actions. If a case doesn't need to be handled right away, consider taking a short break before getting to it. This is to say, cool down and make room for feedback.
- Don’t perform too much moderation in the comments, except if you want a verdict to be public or to ask people to dial a convo down/stop. Single comment warnings are okay.
- Send users concise DMs about verdicts about them, such as bans etc, except in cases where it is clear we don’t want them at all, such as obvious transphobes. No need to notify someone they haven’t been banned of course.
- Explain to a user why their behavior is problematic and how it is distressing others rather than engage with whatever they are saying. Ask them to avoid this in the future and send them packing if they do not comply.
- First warn users, then temp ban them, then finally perma ban them when they break the rules or act inappropriately. Skip steps if necessary.
- Use neutral statements like “this statement can be considered transphobic” rather than “you are being transphobic”.
- No large decisions or actions without community input (polls or meta posts f.ex.).
- Large internal decisions (such as ousting a mod) might require a vote, needing more than 50% of the votes to pass. Also consider asking the community for feedback.
- Remember you are a voluntary moderator. You don’t get paid. Take a break when you need one. Perhaps ask another moderator to step in if necessary.
view the rest of the comments
People often use biodegradabble printing substances so that's not that big of an issue. (Sometimes)
This is a common misconception. PLA is technically compostable industrially, but it will be very slow to break down naturally if you just leave it outside. It can take about 80 years, which is a lot better than other plastics, but it's a bit misleading that it's called biodegradable. There are true biodegradable filaments like PHA, but they're a lot less common.
That being said, 3D printing is actually really useful, and not a significant part of the plastic waste problem.
PLA microplastics take three years. That 80-years figure you've got in your brain is for PET:
https://www.sciencedirect.com/science/article/abs/pii/S0166445X25001547#%3A%7E%3Atext=In+fact%2C+slower+degradation+rates%2C%28European+Bioplastics%2C+2023%29.
(BTW: That study is brand new! From a few days ago.)
See also: https://cen.acs.org/materials/polymers/biodegradable-polymers-make-microplastics/102/i37#%3A%7E%3Atext=In+the+open+environment%2C+PLA%2Cover+another+several+years+%28Sci.
There's some confusion about how PLA breaks down because there's remnants after the 3-5 years where it's not detectable anymore. Those remnants are not microplastics at that point. They're just the base components (e.g. lactic acid) that can last a little bit longer.
Some colorants can last a really long time but I haven't looked into those as much as I have plastics.
BTW: The "sparkly bits" in "silk" filament is just mica powder (iron). It looks like it might be harmful but it's not.
I think the 80 year figure was for PLA, as PET lasts well into the 100s of years (450 is the number I've seen)
This article claims 80 years https://3dinsider.com/is-pla-biodegradable/ but I haven't taken the time to do proper research about this.
It wouldn't surprise me if the science on this is divided, especially because conditions (and the shape of the object) vary so much. It seems very plausible that a thin injection molded PLA cup could break down really fast in a sunny pond in a warm climate, but a thick 3D printed object buried in the ground somewhere with a cold clinate could take many decades.
Anyway, it sounds like it's maybe not as bad as I thought, but it's still not good to treat it like typical biodegradable materials. Especially when pla microplastics are still harmful despite being shorter lived.
A 3D printed PLA object would degrade faster than an injection molded one. Because the layer lines provide much, much more surface area for bacterial infiltration.
I read a study about that specific thing once but I searched just now and can't find it (from my phone). I'll search again when I'm back at my PC later so I can give you a link but... That makes sense, right?
For plastics like PET and ABS microbial breakdown doesn't occur but with PLA and PHA it does. The more surface area, the faster it can be broken down.
Whereas with ABS and PET, the more surface area, the faster it will turn into long-lasting microplastics.