[Hallicrafters] off subject / soldering

[rbethman]

Duane,

The silver work done by jeweler's is entirely different.  Most use a 
flame, but the melting point for silver itself is significantly lower.  
Their work usually involves Sterling Silver, i.e., .999 % pure.

Their is also silver bearing solder that was used in the old Tektronix 
535 and such series of oscilloscopes.  That particular type of solder 
was done with a good old fashioned soldering pencil/iron.

I hope this helps you.

Cheers!
Bob - N0DGN

On 1/3/2012 3:17 PM, Duane Fischer, W8DBF wrote:
> I have a question. Now is 'real' Silver Solder used in jewelry or have 
> I been misinformed. Thank you.
> ----- Original Message ----- From: "rbethman" <rbethman at comcast.net>
> To: "'hallicrafters'" <Hallicrafters at mailman.qth.net>
> Sent: Tuesday, January 03, 2012 2:44 PM
> Subject: [Hallicrafters] off subject / soldering
>
>
>> List,
>>
>> My expertise regarding this topic is as a "once upon a time" Nuclear
>> Grade Certified Welder.
>>
>> 1. It is NOT "silver soldering".  It *IS* silver BRAZING.  That is a
>> very age old misnaming of what it is.  It is accomplished with an
>> air/acetylene torch, or an Oxygen Acetylene torch.
>>
>> Neither Butane NOR Propane will achieve the necessary temperatures.
>>
>> 2. Whether it is Stainless Steel - OR - Galvanized steel cable, it *IS*
>> impregnated with a lubricant.
>>
>> 3. Butt splicing by silver brazing, *IF* a successful butt joint is
>> made, it WILL make a stiff straight section that will NOT bend without
>> breaking.
>>
>> I'm glad that he has an alphabet soup after his name.  It doesn't change
>> the nature, physics, or mechanical nature of the brazing process.
>>
>> Ya'll have a Happy and Joyous New Year!
>>
>> Bob - N0DGN
>>
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>
>

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|               AM Amateur Radio Operator    NØDGN                 |
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