Re: solderig enamelled wire, problems.

On Mon, 23 Jun 2025 12:21:27 +0200, albert@spenarnc.xs4all.nl wrote:

I remember soldering coil/transformer wire was simple in the 70's.
The trick was putting the wire an aspirin tablet and 0.1 mm was no
sweat.
>
Now for the 1v-5v step up converter I followed the advice, and remove
the winding of a 5x5 mm ferrite coil and replaced it with a bifilar
wire with the same number of turns. This was surprisingly easy.
.35 mm wire with 2*.25 wire. (The wire was stolen from a broken
ventilator.)
>
Now I get stuck. I can't solder the wire! The aspirine trick doesn't
work. Burning the insulation turn it into a black coating that
is equally tenacious. Making the copper redhot to burn the coal,
only make the copper to melt.
>
Groetjes Albert

Make sure that the scavenged magnet wire is actually copper.

If the enamel is a dark colour, it may be a high temperature
grade requiring manual scraping for removal.

In the past, you may have been working with 60/40 lead solder
with rosin flux. Various other types of solder and flux are now
more common, for lead-free environments. They may not flow and
lift contaminating films as easily.

Red-hot temperatures should not be neccessary, nor an open
flame.

RL