40 AWG magnet wire

[Jim Parson]

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

Regards,
Jim

 

[The Al Bundy]

"Jim Parson" <parson@donteventrylanl.gov> wrote
news:4074797c$1_3@news3.es.net...

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

Regards,
Jim

What you can try is to head the end of the wire with a soldering iron and
some tin. The insulation can be 'burned' off like that. Other way is to burn
it off with some fire, and scrap/sand the remains of burned insulation away
so only copper stays.

Al

 

[Watson A.Name \"Watt Sun]

The Al Bundy wrote:

"Jim Parson" <parson@donteventrylanl.gov> wrote
news:4074797c$1_3@news3.es.net...

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

Regards,
Jim

What you can try is to head the end of the wire with a soldering iron and
some tin. The insulation can be 'burned' off like that. Other way is to burn
it off with some fire, and scrap/sand the remains of burned insulation away
so only copper stays.

Easier said than done. That wire is so fine that soldering it can
dissolve the copper into the solder if you don't do it quick, and then
you've got an end that's gone and an open.

"Scrap/sand" (sic) can result in the same thing: a broken wire. Stuff
is too fine. Just wrap the wire around a heavier stud made of 24 gauge,
and then solder both, usually the wires will solder okay if the flux is
decent.

> Al

 

[Jerry Greenberg]

Try buring off the insulation with a match. The gently scrape it off
what is left with some fine abrasive. Trim the exposed length you
want, and now this sould work for you.

Jerry G.

--


Jim Parson <parson@donteventrylanl.gov> wrote in message news:<4074797c$1_3@news3.es.net>...

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

Regards,
Jim

 

[Brian Howie]

"Jim Parson" <parson@donteventrylanl.gov> wrote in message
news:4074797c$1_3@news3.es.net...

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

I vaguely remember a tip to heat it in a flame to burn the insulation
and then quickly dowse it in alchohol to stop it oxidising.

Do a google on soldering Litz wire.

Brian

 

[jtech]

"Jim Parson" <parson@donteventrylanl.gov> wrote in message
news:4074797c$1_3@news3.es.net...

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

Regards,
Jim

Try using paint thinner to dip the wire in and let it dissolve the enamel

coating from the wire. Then clean it well with alcohol and use flux on it
to solder.

 

[Jim Parson]

Sorry for the late reply. Thanks for all the suggestions. I tried
burning off the insulation but that left a residue that was equally hard
to remove. After some practice I've found that scraping (gingerly) the
end of the wire with a scalpel held orthogonal to the wire works well. I
also got an e-mail from someone internal to my organization suggesting
that melting a small piece of aspirin with a soldering iron and then
dipping the wire into the molten goo works well for almost all types of
insulation. Haven't tried that technique yet.

Regards,
Jim

 

[JeffM]

my organization suggesting
melting a small piece of aspirin with a soldering iron
then dipping the wire into the molten goo
Jim Parson

The active ingredient in aspirin is an organic acid (acetylsalicylic acid).
Generally, acid fluxes are frowned on in electrical work
because, if not properly cleaned/neutralized, they can corrode the wire.
The smaller the wire, the greater the threat.

 

[Don Klipstein]

In article <4074797c$1_3@news3.es.net>, Jim Parson wrote:

I'm trying to solder some twisted pair leads from several coils to 38
AWG coax for an MEG experiment. The trouble I'm running into is that I
can't find anything to remove the insulation from the 40 AWG magnet
wire. Any suggestions on what would remove the insulation so the wires
can be tinned?

1. An especially hot soldering iron, such as a 40 watt one or one of
those soldering guns.

2. Gently scrape off the varnish with a single edge razor blade, "exacto"
blade or the like. I have gotten away with this with wire as thin as 42.

- Don Klipstein (don@misty.com)