[Elecraft] Solder and stuff

Fri Jan 23 15:22:00 2004

NOW might be the time to "stock up" on a few pounds for future use!
The "ANTI LEAD" hysteria seems to be going world-wide now!
I guess the next thing will be a ban on possession of lead by individuals
in the next few years?  The anti-firearms  people have been working on this
for years figuring if they do away with lead then no one will be able
to legally possess firearms ammunition or do any hunting!
73,
Sandy W5TVW
----- Original Message ----- 
From: "Don Brown" <[email protected]>
To: <[email protected]>; "Ian J Maude" <[email protected]>
Sent: Friday, January 23, 2004 9:00 AM
Subject: Re: [Elecraft] Solder and stuff

| Hi
|
| Lead free solder melts at a higher temperature and is harder to work with than
tin/lead solder. The alloys listed below are from the Kester website. These are the
commonly used formulations. The problem with the lead free solder is it does not wet
the joint as well as tin/lead and the joints will not look as good. You can make good
joints with the no lead but technique is more demanding. Japan has already phased out
lead solder and Europe is due to phase it out in 2006. The US will probably be
required to follow suit and the solder manufacturers are already addressing the
problem with new products. I don't know what Elecraft will do about this but so far I
have not heard anything about it and the recommended solder is tin/lead. Wayne, Eric
or Gary should give us some direction on this as it will come up more and more as the
tin/ lead solder gets harder to find. Maybe a test K2 or K1 should be built using no
lead solder to develop a method and look for problems with the no lead solder. The
Kester web site does warn about mixing no lead with tin/lead. I do not know if any of
the components used in the K2 have tin/lead plating on the leads. If they do then
this could be a problem. I think most component leads are tin plated now so it may
not matter.  The water soluble flux should not be used as it is an acid based flux
that requires special handling.
|
| Don Brown
| KD5NDB
|
| For Hand Soldering Operations
|   a.. Alloys
|     a.. Sn96.5Ag3.5
|     b.. Sn96.5Ag3.0Cu0.5
|     c.. Sn99.3Cu0.7
|   b.. Fluxes
|     a.. No-Clean: 275
|     b.. Water Soluble:  331
|
|
|   ----- Original Message ----- 
|   From: Ian J Maude
|   To: [email protected]
|   Sent: Friday, January 23, 2004 3:11 AM
|   Subject: [Elecraft] Solder and stuff
|
|
|   Hi all,
|   While I am waiting for my K2 to arrive I am browsing everything on the
|   site.  I came across the soldering tutorial and information on different
|   types of solder.  Looking at the recommendations etc I noticed that
|   silvered solder was not recommended and I can understand the reasons for
|   it with the extra heat needed etc.  The one I am more concerned about is
|   the very strong opposition to lead free solder.  Leaded solder is not as
|   easy to get these days in the UK and of course has some inherent health
|   risks.  I wondered what the reason was for such a strong bias against
|   lead free solder?
|
|   Ian
|   -- 
|
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