On 24 Apr 2005 00:58:21 -0700, "4square"
Well that's what you get for listening to UKIP scaremongering. They're
going to straighten your bananas too you know !
Was it Europe that imposed Part P on us ? Or Blair ?
In article ,
Certainly for use on potable water supplies. Doubt it for electrical or
general use. The fumes from the flux are said to be more of a risk. They
can't be much of a risk or I'd be dead by now.
I've got some lead-free solder for electronic assembly work. It's got a
very nice sweet fragance which just invites more breathing in of the
stuff. I'm still alive as i write this last wordl;wqdwqdfeq......
of a risk. They
Some manufacturers ar switching to lead free solder - probably out of
fear or hype that lead solder will eventually be banned.
And I'd agree on the flux, it gives me asthma if I breathe it in too much.
More than you ever want to know...
For a start, scroll down to "lead-free soldering", at:
basic aim is very praiseworthy: to drastically reduce the amount of
lead going into landfill in the solder content of scrap electronic
equipment. But lead-free solder requires much tighter process tolerances
than the old tin/lead, and many industry commentators are expecting a
decrease in reliability of electronic equipment.
Hand soldering and repairs are significantly more difficult with
lead-free solder. Bit temperatures have to increase, and/or it takes
significantly longer to heat up the joint, both of which increase the
risk of overheating the components and PC boards.
In trying to avoid that risk, you may instead risk making 'cold' joints
that will very quickly fail... but even good joints made with lead-free
solder *look* like they are cold joints! Your experience in judging the
quality of tin-lead solder joints by their appearance can actually
mislead you with lead-free. That can lead you into a vicious circle of
re-heating joints that actually may be perfectly OK... if only you could
For ordinary DIY hand soldering, stock up on all the leaded solder
you're going to need for a lifetime, while it's still available. If you
use it to repair existing equipment and extend its working life, then
IMO you'll have done more than your share to keep lead out of landfill.
In message ,
Yes, its banned (there are some exemptions) from 1 July 2006 under the
RoHS (restriction of Hazardous Substances) directive.
Total ******* nightmare.
Lead free solders require higher process temperatures and much better
process control, and still the joints look crap.
The real problem is contamination by lead. Even a fractional percentage
of lead in the solder completely screws joint reliability. Therefore
before you turn a product / process over to leadfree, you have to 100%
sure ALL your components are leadfree. Some component manufactures have
changed part numbers, some haven't. Everything has to be checked,
inventories and databases updated etc etc. Now if you make loads of a
small range of products, it manageable. We make small volumes of a huge
range of complex products.
Its a complete bureaucratic nonsense that will cripple UK / European
electronics manufacture, and just drive more of it to China.
The real stupid thing is that the WEEE directive (Waste electrical /
electronic equipment) means that in future most electrical stuff will be
separated and recycled anyway, so all this lead was to be taken out of
the landfill route anyway.
RoHS is my favourite anti-euro rant topic at the moment!
Plenty of info here :
: Yes, our company went lead free last year. All flow soldering and hand
: soldering inc my service side has gone that way. TAkes a while to get used
: to lead free solder I found.
I do a lot of soldering work with children. The first reel of lead
free solder I got was dreadful - far too high a melting point. I got
some from Maplins recently, though, as an experiment, which works
As far as lead in solder is concerned, those arguments are already over.
The global electronics industry is changing to lead-free soldering, and
My point was that a forced and hurried change is not the right way to do
it. Not if safety-critical systems become less reliable, failure rates
in general increase... and by the way, more scrap electronics goes into
landfill. Less lead, but even more junk.
On Mon, 25 Apr 2005 14:06:43 +0100, Ian White
I took a tour around a privately owned tin mine in Cornwall last year,
the chap said it was just about economic to consider re working it
rather than just giving tours.
On Mon, 25 Apr 2005 16:13:56 +0100, Chris Bacon
No this was an old disused mine which had been bought by one of the
machine drivers working in the last commercial mines. He and his son
had turned it into a rudimentary tourist attraction. The tour wasn't
really in the mine but just a walk through the various processes in
extraction and smelting. I bought my wife a celtic cross pendant they
had cast there. I think it was the Wheal Kitty but the brochure said
Blue Hills. It is on the coast north of St Agnes.