RE: [Elecraft] [K3] - mods and solder

2008-04-02 Thread Ron D'Eau Claire
Vic wrote: It's (water soluable flux) very hard to wash off completely and is usually used for mechanized soldering. It's not recommended by Elecraft. If you don't wash it off completely, what's left absorbs moisture from the air and becomes conductive. - >From what I've r

Re: [Elecraft] [K3] - mods and solder

2008-04-02 Thread Jim Cox
Will this thread ever die a graceful death? - Original Message - From: "Vic K2VCO" <[EMAIL PROTECTED]> To: "Elecraft Reflector" Sent: Wednesday, April 02, 2008 11:37 AM Subject: Re: [Elecraft] [K3] - mods and solder Alan Bloom wrote: Water-soluble flux

Re: [Elecraft] [K3] - mods and solder

2008-04-02 Thread David Ferrington, M0XDF
Thanks much, very informative and useful. 73 de M0XDF, K3 #174 -- A good cook is like a sorceress who dispenses happiness. -Elsa Schiaparelli, fashion designer (1890-1973) On 2 Apr 2008, at 17:23, Alan Bloom wrote: Some years ago when I was a Materials Engineer for Hewlett Packard, solder was on

Re: [Elecraft] [K3] - mods and solder

2008-04-02 Thread Vic K2VCO
Alan Bloom wrote: Water-soluble flux is OK for electronic work only if it is washed off after the soldering job is complete. It's very hard to wash off completely and is usually used for mechanized soldering. It's not recommended by Elecraft. If you don't wash it off completely, what's left

Re: [Elecraft] [K3] - mods and solder

2008-04-02 Thread Alan Bloom
Some years ago when I was a Materials Engineer for Hewlett Packard, solder was one of my categories. The purpose of flux is to "reduce" (eat away) the oxide coating on the copper so the solder can stick to it and also as a wetting agent to reduce the surface tension of the molten solder and to pre

Re: [Elecraft] [K3] - mods and solder

2008-04-02 Thread David Ferrington, M0XDF
ok, thanks for that, the latest RS stuff says: Crystal 400 60/40 Tin/Lead EN29453, S-Sn60Pb40E the Elecraft HAGC mod instructions for SMD say 63/37 or 60/40 Sn/Pb-content rosin-core solder, 0.015" to 0.025" diameter so my S-Sn60Pb40E looks like thats the same alloy, not sure what the 'E' me

RE: [Elecraft] [K3] - mods and solder

2008-04-02 Thread Gary Hvizdak
At 0315 EST on Wednesday April 2nd 2008 David Ferrington (M0XDF) wrote ... ... I KNOW some of you know a lot about solder. ... -- Hi Dave, Your 60/40 solder could possibly result in what are referred to as "cold" or "disturbed" solder joints. If I were you I'd only use that stuff for non-

[Elecraft] [K3] - mods and solder

2008-04-02 Thread David Ferrington, M0XDF
Well, all this talk of mods got me wondering and I liek some opinions from this group - I KNOW some of you know a lot about solder. Resin core solder - thats not acid flux is it? Most of my solder came from my time with electronics in defense over 30 years ago. I have 2 reels that are labe