Please, use adequate ventilation (with a heat exchanger if you need to keep A/C in the room) if you’re going to be resin printing inside. I don’t want to see all of you guys get cancer from this hobby.
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Fuck this video. Dude claims it’s killing you and offers zero reason as to why or how. Pure clickbait bullshit here folks
Also leads with “It’s not clickbait”, then it is clickbait. Really the peak of modern Youtube scum.
To be fair, this is kind of the environment YouTube have cultivated over the years, intentionally or otherwise
To be fair, YouTube cultivated this environment because their users respond to it. If users stopped clicking on clearly-clickbait videos, YT would stop pushing them, and creators would stop making them.
Little quite I heard from, ironically, a YouTuber:
“Wishing upon a star that people be better than they are is a terrible plan every time”
Wellll…a wish is distinctly different from a plan, so that makes no sense.
Hey, if you have a plan to convince everyone to do a specific thing, be my guest
I do not. Nor did I claim to.
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What is “sensibilization” and why is it not a good thing?
They mean sensitization. It’s where you react more strongly to exposure the more you’re exposed. It’s a problem for a couple of reasons. The scary one is some people move along the reaction continuum from “mildly annoying” to “oh shit call an ambulance” pretty fast. It’s not common but it happens. I actually have a condition that predisposes me to that so I always carry an epi-pen. Good times.
The more mundane one is, even with controls to remove fumes and PPE to avoid them, it’s not uncommon to still be exposed to a small degree, especially in a hobbyist setting. Let’s imagine you’re lax on avoiding exposure and become sensitized due to prolonged and/or heavy exposure, so you set up proper controls to try to avoid it. Now the small amount of remaining exposure which may have never been a problem with proper controls may actually become a problem. Now you can’t work with that material at all without having some sort of reaction.
He mentions VOCs within the resin, just because you can’t wrap your head around why inhaling “volatile organic compounds” can be bad for you, does not mean it’s wrong. Take proper precautions to ventilate the area while printing resin, please.
You know volatile just means it readily evaporates, right?
Alcohol is a volatile organic compound.
Nothing about the term ‘volatile organic compound’ means dangerous. You need more information.
Even when you cook food there are volatile organic compounds all around you and nobody would say they’re dangerous.
Oh, we’re supposed to read the manuals before handling chemicals now?!
You clearly have no idea what that even means.
When you cook food there are voletile organic componds. Almost everything you smell are voletile organic compounds. Parfums are voletile organic compounds. Your air is full of voletile organic compounds.
It doesn’t say shit about how bad something is for you.
And the difference being that those VOCs are not specifically isomers which are carrying polymers for additive manufacturing. Volatile meaning they are airborne (or readily made airborne at least, it has to relate to vapor pressure), organic meaning that they’ve got carbon bonds which readily interact with other elements.
Plenty of people have already suffered anaphylactic shock and other immune sensitivities from coming into direct contact with resin. These sensitivities are permanent. There is no reversing them.
Basically everything that has a smell is a VOC. If it wouldn’t be volatile it wouldn’t have a smell. Something being volatile alone doesn’t say anything about it’s toxicity.
Something being organic also doesn’t say anything about toxicity. Your whole body is made out of carbon. Something being an organic compound doesn’t say anything about it’s reactivity either. That’s simply not how it works.
Something being a polymer also doesn’t say anything about it’s toxicity. Proteines are polymers. DNA is a polymer too and neither are particularly toxic. Polymer just means that’s its a structure that repeats itself. Poly = multiple, mer = parts.
Everything you said doesn’t say anything about toxicity. Toxicity depends on the individual compound. Even small alterations can make a harmless molecule toxic.
All VOCs are reactive. VOCs range from “Known Cancer causing effects” to Mildly harmful, but VOCs are considered harmful. At the ranges presented in the video, they are immediately harmful. If you wanna go huff your resin, you deserve what’s coming to you. I’ve talked to Resin chemists (mostly through the 2019-2020 Midwest RepRap Fests), and they agree with most of what’s in that video. Go ahead and get mad about things if you feel resolve in doing so. I’ll continue warning people of the dangers.
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Nah. It’s just that the reasons he mentions are simply not true. Resin fumes are harmful, but not because they are VOCs or because they’re polymers. He tries to make it sound like he knows what he’s talking about when he clearly doesn’t
I had no idea reskin could cause serious injury with mere contact. Why is it so dangerous?
Resin typically has chemicals which are auto-immune sensitizers. The more often your immune system comes in contact with them, the more strongly it reacts. You could be one of the lucky ones, and have it contact you a hundred times and nothing happen too drastic other than dermatitis. Other people have gotten it on them a handful of times and are now highly sensitive to it (I’m one of those).
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Explain what you mean by use heat exchangers?
It’s essentially a heat/cooling recovery unit so you’re not simply pumping your A/C out into the world and wasting energy. It allows you to swap the air in a room out, without losing its cool/heat by simply pumping in outside air. The video explains what he used.
I’m just going to leave this here https://youtu.be/ht4tbCiFxeM?si=fQuV-vS4V0crt6Hf
Thanks. I’m no expert at this chemistry, but this is the better reference IMO
He says even as a trained chemist, he does not understand resin completely and its full risks.
What is the correct way to ventilate the 3D printers? How can you ensure accidental contact with resin won’t ruin your life?
The correct way is basically this: Get a ventilation fan, and exhaust the air around the resin printer to the outside of your home. Learn proper safety procedures, with correct nitrile gloves, and VOC-rated respirator and use that to ensure you don’t get resin on your skin. Resin print in the garage if possible. Resin likes warmer temperatures anyhow, it helps the chemical reaction occur. Make sure this ventilation fan is AT the window, because you don’t want any of the pressurized air to leak back into your living space. You want it to suck air out of the room and vent it outside.
An upgraded system is going to cost more, but if you’re in an air conditioned area - it will save you air conditioning costs. You need a heat recovery ventilator, and typically that will come with 2 blower fans, this isn’t absolutely necessary but would be the “correct” way to do it. I’d opt for this if you’re resin printing inside your home office and it’s going to be a permanent thing, or if you’re running lots of resin printers at once.
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