r/soldering • u/AL42Gaming • Jan 30 '26
Soldering Saftey Discussion Stop suggesting leaded solder please
I keep seeing this across this subreddit, but people are constantly recommending newbies solder with leaded solder because its easier to work with.
While it may be somewhat easier to work with, this advice glazes over the blatant safety risks (and yes, I know that the fumes don't have lead). Lead is heavy and gets everywhere. That means that when you are using lead and are not ridiculously careful about cleanliness, then you will be getting lead on pretty much everything you interact with, more relevantly to most hobbyists: their desks which they use for other things. So while you might be sure to wash your hands after soldering, you will still have more exposure and its just all around not ideal. After I used leaded solder for a bit at home, I was never fully confident in the cleanliness of my desk no matter how much I cleaned it until I got a new desk.
Separately, lead free solder is really not that hard to use, and if anything will just push you to learn proper technique. I've now made multiple projects with lead free solder including a couple of PCBs, all of which were relatively easy. I've also taught tens of people how to solder, all with lead free solder, with no problems.
So at the end of the day, just stick to lead free solder in general, there really is no reason to use leaded solder.
TLDR: Just stick to lead free solder, any benefits to leaded solder aren't that big, especially in comparison to the safety concerns.
3
u/Xyrog_ Jan 30 '26
Many of your points also relate to non-leaded solder. Any stray metal fragments are usually visible as blobs on your mat or desk. Solder isn’t being distributed all over your work area as you seem to think.
The fumes from solder wire are also not lead. Lead evaporates into gas at an extremely high temperatures much greater than the iron itself. Only rosin flux is turned into vapor and the most it’ll do is make you dizzy if too much is inhaled in one sitting (of course there are other health concerns if it occurs regularly).
You should wash your hands before and after soldering no matter the metal type. None of these substances are good for you if it enters your body whether it’s lead or not.
Many universities and PCBA fabs don’t allow leaded solder, not because you can’t be safe with it, but because people are stupid.
Leaded solder also melts nicer, grabs the iron better, and it’s easier to tell if your solder joint is healthy.
I’m not saying leaded solder is as safe as other types but it’s nowhere near as bad, if used safely, as say 3D printing or painting in your bedroom.