[AMRadio] Coil

[Mark]

I use Stay-Clean. A product we use in the HVAC/R industry to remove 
oxidation before brazing/soldering. Its very strong, so must be careful. 
I'd say it's closer to a mild acidic than the flux we are used to. Just 
neutralize with a damp cloth and you should be good to go. I think it 
has zinc-Chloride in it.

https://www.amazon.com/Harris-SCLF4-Stay-Clean-Soldering/dp/B0015DWPV8/ref=asc_df_B0015DWPV8/?tag=hyprod-20&linkCode=df0&hvadid=312134375915&hvpos=1o3&hvnetw=g&hvrand=16606748426678408738&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9021490&hvtargid=pla-568556286881&psc=1

Mark

Kd9cxh




On 12/21/2018 1:03 AM, Donald Chester wrote:
> Re removing enamel insulation from fine enamelled wire.
>
> Scraping fine enamelled wire is apt to damage the strand and may not clean off all the insulation.  Heating with a flame will leave the copper so brittle that it will break easily.
>
> The following method is described in a 1949 publication "Electronics manual for radio engineers":
>
> Apply a small quantity of a paste of zinc chloride and water to the strand and heat with a soldering iron, immediately followed by tinning with rosin core solder while the resulting mixture of zinc chloride and enamel is still boiling. Wipe off the residue and excess solder with a damp rag quickly, while the wire is still hot.
>
>
> Don k4kyv
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