(also, no lower toxicity limit for lead was ever established in spite of substantial amount of research, so the science is on her side, not mine)
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Replying to @whitequark
i mean yeah, sure, i fully realize that much, mostly it’s the ‘but why’ question rather than ‘that’s dumb because x.‘ legit puzzled over it, etc
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Replying to @USP_Talon @whitequark
- If you're soldering stuff in your house, and have poor ventilation, the lead vapor is actually an issue, and you might get little bits of lead on your floor. - Maybe you want to be able to put electronics in with other garbage and incinerate it?
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Replying to @peroxycarbonate @USP_Talon
source for the lead vapor claim? at one point I did a literature review and I wasn't able to find anything that conclusively proves that it is an issue (or that it isn't)
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Replying to @peroxycarbonate @USP_Talon
aha, I haven't seen this study before and after carefully looking it's actually close enough to soldering that the results are likely relevant. thank you. hm, I should check my blood lead levels.
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(not that I have remotely enough lead exposure either way, but this study implies it's significantly more than I expected, so I should at least reevaluate my choices and decide if I still like them.)
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er. you linked to MMWR. I looked up reference (2) and ended up on https://sci-hub.se/https://www.nejm.org/doi/full/10.1056/NEJM198707233170406 …, which actually describes their methods and, more just as importantly, exactly what temperature they are "soldering" at
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According to this article, dross/dust can cause exposure, but lead fumes don't cause trouble until about 450C. https://diamondenv.wordpress.com/2011/01/06/lead-exposure-during-soldering/ … (Which is good news for me and my basement soldering station.)
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the NEJM study states a 260°C number; it's not clear if it's representative of the process or just a minimum, but that's sufficient for me to spend more time looking into the issue
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That number is most questionable. They were torch soldering, and torches put out vastly higher temperatures than a soldering iron, so it's easy to overheat a small part of the workpiece. (And acetylene? What were they thinking?)
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Replying to @NYarvin @JayGSlater and
yeah, that was my general conclusion as well, I just thought I'd make sure that it's right before stating it as a fact given that the study itself is a bit ambiguous.
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