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Mike Andrews wrote:
Al wrote: In article , kenneth scharf wrote: Like I said the word 'plumber' comes from the latin plumbum meaning lead. Ancient Rome was the first to use lead pipes. Could be why Nero was mad as a hatter. I heard this. Their wine was being drunk from lead-lined flasks. Well, no, not so far as I've found. But they _did_ use lead water piping, and they _did_ use lead acetate ("sugar of lead") as a condiment. The first is bad only where the water's mildly acidic. The _second_ is Just Plain Bad. Here is a good link on lead compounds: http://www.luminet.net/~wenonah/hydro/pb.htm - Mike - |
This line of discussion is not useful.
Is it that "real hams" have to use leaded solder? Come on! Isn't there anyone out there actually useing lead free solder in thier circuits? Thanks, The Eternal Squire Mike Coslo wrote in message t... Mike Andrews wrote: Al wrote: In article , kenneth scharf wrote: Like I said the word 'plumber' comes from the latin plumbum meaning lead. Ancient Rome was the first to use lead pipes. Could be why Nero was mad as a hatter. I heard this. Their wine was being drunk from lead-lined flasks. Well, no, not so far as I've found. But they _did_ use lead water piping, and they _did_ use lead acetate ("sugar of lead") as a condiment. The first is bad only where the water's mildly acidic. The _second_ is Just Plain Bad. Here is a good link on lead compounds: http://www.luminet.net/~wenonah/hydro/pb.htm - Mike - --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.551 / Virus Database: 343 - Release Date: 12/11/03 |
This line of discussion is not useful.
Is it that "real hams" have to use leaded solder? Come on! Isn't there anyone out there actually useing lead free solder in thier circuits? Thanks, The Eternal Squire Mike Coslo wrote in message t... Mike Andrews wrote: Al wrote: In article , kenneth scharf wrote: Like I said the word 'plumber' comes from the latin plumbum meaning lead. Ancient Rome was the first to use lead pipes. Could be why Nero was mad as a hatter. I heard this. Their wine was being drunk from lead-lined flasks. Well, no, not so far as I've found. But they _did_ use lead water piping, and they _did_ use lead acetate ("sugar of lead") as a condiment. The first is bad only where the water's mildly acidic. The _second_ is Just Plain Bad. Here is a good link on lead compounds: http://www.luminet.net/~wenonah/hydro/pb.htm - Mike - --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.551 / Virus Database: 343 - Release Date: 12/11/03 |
In article ,
"The Eternal Squire" wrote: This line of discussion is not useful. Is it that "real hams" have to use leaded solder? Come on! Isn't there anyone out there actually useing lead free solder in thier circuits? Thanks, Even if you used lead free solder, you would not be lead free. After all, your component leads and your printed circuit boards use tin/lead solder to insure solderability. Until all of the components are lead free, you will be chasing smoke. this is especially true when repairing old electronics. If you use a non-lead solder with leaded components, you will most likely creat brittle intermetallics which will greatly reduce the reliability of your equipment. The biggest problem to date is the intermixing of various solder compostions. Uncontrolled mixtures with unknown proberties are created. Yes, I know, there are lead free leaded components. For example, gold plated leads on ICs. But, these do create brittle intermetallics if the solering process is not exact. And I doubt it is exact when using a soldering iron. A few years ago, I worked in a lab where we evaluated various solders for our customers. Things may have changed since then, but believe me, you don't want to do it yet. Al -- There's never enough time to do it right the first time....... |
In article ,
"The Eternal Squire" wrote: This line of discussion is not useful. Is it that "real hams" have to use leaded solder? Come on! Isn't there anyone out there actually useing lead free solder in thier circuits? Thanks, Even if you used lead free solder, you would not be lead free. After all, your component leads and your printed circuit boards use tin/lead solder to insure solderability. Until all of the components are lead free, you will be chasing smoke. this is especially true when repairing old electronics. If you use a non-lead solder with leaded components, you will most likely creat brittle intermetallics which will greatly reduce the reliability of your equipment. The biggest problem to date is the intermixing of various solder compostions. Uncontrolled mixtures with unknown proberties are created. Yes, I know, there are lead free leaded components. For example, gold plated leads on ICs. But, these do create brittle intermetallics if the solering process is not exact. And I doubt it is exact when using a soldering iron. A few years ago, I worked in a lab where we evaluated various solders for our customers. Things may have changed since then, but believe me, you don't want to do it yet. Al -- There's never enough time to do it right the first time....... |
Even if you used lead free solder, you would not be lead free. After
all, your component leads and your printed circuit boards use tin/lead solder to insure solderability. Until all of the components are lead free, you will be chasing smoke. this is especially true when repairing old electronics. If you use a non-lead solder with leaded components, you will most likely creat brittle intermetallics which will greatly reduce the reliability of your equipment. The biggest problem to date is the intermixing of various solder compostions. Uncontrolled mixtures with unknown properties are created. Yes, I know, there are lead free leaded components. For example, gold plated leads on ICs. But, these do create brittle intermetallics if the solering process is not exact. And I doubt it is exact when using a soldering iron. A few years ago, I worked in a lab where we evaluated various solders for our customers. Things may have changed since then, but believe me, you don't want to do it yet. ==================================== Considering the above , I shall stock up with solder currently available eg with lead. Even when it is stated (in another message earlier in this thread) that only 'fresh' rosin core solder will give the best results. Frank GM0CSZ /KN6WH located in EU |
Even if you used lead free solder, you would not be lead free. After
all, your component leads and your printed circuit boards use tin/lead solder to insure solderability. Until all of the components are lead free, you will be chasing smoke. this is especially true when repairing old electronics. If you use a non-lead solder with leaded components, you will most likely creat brittle intermetallics which will greatly reduce the reliability of your equipment. The biggest problem to date is the intermixing of various solder compostions. Uncontrolled mixtures with unknown properties are created. Yes, I know, there are lead free leaded components. For example, gold plated leads on ICs. But, these do create brittle intermetallics if the solering process is not exact. And I doubt it is exact when using a soldering iron. A few years ago, I worked in a lab where we evaluated various solders for our customers. Things may have changed since then, but believe me, you don't want to do it yet. ==================================== Considering the above , I shall stock up with solder currently available eg with lead. Even when it is stated (in another message earlier in this thread) that only 'fresh' rosin core solder will give the best results. Frank GM0CSZ /KN6WH located in EU |
The Eternal Squire wrote:
This line of discussion is not useful. Is it that "real hams" have to use leaded solder? Come on! Isn't there anyone out there actually useing lead free solder in thier circuits? I strongly suspect that the answer is no. So you have a chance to lead (with a long e) the charge. Please keep us posted on how it works out. Roy Lewallen, W7EL |
The Eternal Squire wrote:
This line of discussion is not useful. Is it that "real hams" have to use leaded solder? Come on! Isn't there anyone out there actually useing lead free solder in thier circuits? I strongly suspect that the answer is no. So you have a chance to lead (with a long e) the charge. Please keep us posted on how it works out. Roy Lewallen, W7EL |
On Mon, 22 Dec 2003 16:20:40 -0000, "Frank Dinger"
wrote: Even if you used lead free solder, you would not be lead free. After all, your component leads and your printed circuit boards use tin/lead solder to insure solderability. Until all of the components are lead free, you will be chasing smoke. this is especially true when repairing old electronics. If you use a non-lead solder with leaded components, you will most likely creat brittle intermetallics which will greatly reduce the A few years ago, I worked in a lab where we evaluated various solders for our customers. Things may have changed since then, but believe me, you don't want to do it yet. ==================================== Considering the above , I shall stock up with solder currently available eg with lead. Even when it is stated (in another message earlier in this thread) that only 'fresh' rosin core solder will give the best results. Frank GM0CSZ /KN6WH located in EU I would agree. Just like with house painting, using oil-based over oil-based paint, and latex over latex paint, you really don't want to mix. Although the metallurgy of mixing different solders could be fascinating, the performance might not be, especially in harsh environments (temp cycles or physical roughness). Happy trails, Gary (net.yogi.bear) ------------------------------------------------ at the 51st percentile of ursine intelligence Gary D. Schwartz, Needham, MA, USA Please reply to: garyDOTschwartzATpoboxDOTcom |
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