Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman
--
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or not you are posting the same letter.
Change domain to erols.com, if necessary.

Of course solder won't stick to the enamel, but enamel will melt in
the presence of molten solder. So, just apply a heat and solder and
you should have no problem.

Alternatively, there is a product called Strip-X that will disolve the
enamel. You can also scrape the enamel off with a knife or sand
paper. I prefer the molten solder approach.

Marko


On Mon, 31 Jan 2005 10:11:10 -0500, meirman
wrote:

Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman

In sci.electronics.repair on Mon, 31 Jan 2005 13:09:24 -0800 Jamie
posted:

meirman wrote:

Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman

acetone ( fingernail polish remover).

Thanks to both of you. I'm sure any of these will do it. (Won't decide
which one to try until I sit down at the bench.)

Meirman
--
If emailing, please let me know whether
or not you are posting the same letter.
Change domain to erols.com, if necessary.

Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman-

There are some kinds of coating that burn off from the heat of a soldering
iron, but others are quite heat resistant. If the insulation won't burn off,
you will have to scrape it, use a chemical like Strip-X or use sandpaper. From
what you say, it will be delicate any way you go!

Consider that after soldering, long wires will exert forces on the stubs any
time they move. It would be a good idea to provide some kind of support like
a nearby terminal strip, that can buffer the mechanical forces of longer wires.

Fred

meirman wrote:

Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman
--
If emailing, please let me know whether
or not you are posting the same letter.
Change domain to erols.com, if necessary.
acetone ( fingernail polish remover).

Solder will not work with enamel. The enamel is a type of insulation. You
must burn or scrape it off to get the solder to work with it.

--

Jerry G.
=====

"meirman" wrote in message
...
Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman
--
If emailing, please let me know whether
or not you are posting the same letter.
Change domain to erols.com, if necessary.

In article ,
says...
Is it necessary to clean the enamel from enamelled wire before
soldering it?

Don't know what they're using these days, but used to
be two kinds called solvar and formvar. IIRC, solvar
is softer and melts away at soldering temperatures
almost acting like flux, while formvar is more durable
and you can burn it off with a lot of heat but you may
not get a good solder joint and chemical or abrasive
cleaning is recommended. If in doubt, clean.

Yes you must get the enamel off. The best way to do this I've seen thusfar is
to tin it. That is attempt to tin the enameled wire until the enamel
melts/burns/whatever off.

Usually then you got a nice tinned surface which will make a good connection.
In fact, in a blob of solder there is no atmosphere, so not only have you not
nicked the wire, or shaved any of it off, there will be less corrosion and the
sweating will go even better.

Mid-aged hillbilly with an engineering degree taught me this. Amazing what it
takes some times eh ?

JURB

Chemical stripper with a formic acid basis.
works very well.


"Jerry G." a écrit dans le message news:
...
Solder will not work with enamel. The enamel is a type of insulation. You
must burn or scrape it off to get the solder to work with it.

--

Jerry G.
=====

"meirman" wrote in message
...
Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

Meirman
--
If emailing, please let me know whether
or not you are posting the same letter.
Change domain to erols.com, if necessary.

"meirman" wrote in message
...
Is it necessary to clean the enamel from enamelled wire before
soldering it?

I have a vague recollection that I read that it wasn't, and I only
have a couple little stubs that I'm afraid will beak off if I move
them around at all. (These are part of the 110volt winding in step
down transformer.)

There are two types of enamel in use. One is self fluxing - needs no
removal. Try soldering - if it doesn't work scrape the enamel off with an
exacto knife.
--
N