Magnet Wire Enamel stripper?
pmarx...@nospam.unl.edu
from magnet wire? I'm talking about mostly pretty old magnet
wire, not recent stuff which has coatings *designed* to resist
solvents.
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<<<<<<< Email: pmarxhausen "at" unl "dot" edu >>>>>>>
Rich Grise
>
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
> solvents.
>
I've found that a little piece of steel wool works great! Just
wrap it around the end of the wire - well, fold it actually, and
hold it between your thumb and finger, and it scrapes the enamel
right off!
Cheers!
Rich
Roma
wool.
Roma
Robert Strand
I suggest scrape with razor blade or knife and burn-off rest with soldering iron;
try not to breath the fumes.
Regards
Rob
pmarx...@nospam.unl.edu wrote:
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
> solvents.
>
Ken
Robert Strand wrote:
>
> I think methly-ethly-ketone (MEK) is the stuff, it's pretty evil though.
Methylene chloride is better but far more evil.
> I suggest scrape with razor blade or knife and burn-off rest with soldering iron;
> try not to breath the fumes.
Probably the quickest method and the one I use. Just have to be careful to
not nick the wire or it might eventually break.
--
Ken Tyler - 1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Tony Williams
<pmarx...@nospam.unl.edu> wrote:
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
> solvents.
For thicker wires, scrape it with a blade.
For thin wires, use a small spirit lamp,
(methylated spirit) and wipe the burnt
carbon residue off.
--
Tony Williams.
Rich Grise
I tried the "burn the enamel off" method once, and wound up with
a little lump of copper at the end of the wire, where the molten
copper had balled up because of its surface tension. So, personally,
I avoid taking flame to tiny copper wire.
Your Mileage May Vary. :-)
Cheers!
Rich
Mike McCarty
most are based on methylchloride.
In article <80cs79$8cr$2...@unlnews.unl.edu>, <pmarx...@nospam.unl.edu> wrote:
)What chemicals will effectively and safely strip the enamel
)from magnet wire? I'm talking about mostly pretty old magnet
)wire, not recent stuff which has coatings *designed* to resist
)solvents.
--
----
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This message made from 100% recycled bits.
I don't speak for Alcatel <- They make me say that.
jim ross
Thirty years ago there was something called Stripvar.
Just dip it let the reaction take place in the air, then wipe it clean.
Jim
pmarx...@nospam.unl.edu wrote:
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
Tadeusz Bak
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
> solvents.
Put the wire on an aspirin pill and press with a hot iron tip for 2-3
seconds.
--
Tad
Harry H Conover
: I've use "paint remover" type chemicals. In the US, Strip-X. I think
: most are based on methylchloride.
I'll second that idea. Xylol works in many cases (a diluted version
of which is available as a "gum" remover in most stationery stores)
but if you can get it methylenechloride works better. Actually, you
can use any chlorinated hyrocarbon to good advantage, along with a
very fine steel wool.
Harry C.
Dan S. Hagood III
a piece of enamel wire to the tip of the flame from a match or cigarette
lighter and then cleaned the end with an exacto knife. You could also use 600
grit sandpaper folded as to wrap around the wire as you clean the end making
the copper shiny & bright. I hope this helps.
Dan S. Hagood III
wjls...@my-deja.com
pmarx...@nospam.unl.edu wrote:
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
> solvents.
>
The various chemical, thermal, and mechanical stripping techniques
suggested in this thread will all work (I think I've used most of them)
and are all cheap. But, if you're doing production rather than hobby
work, and can afford a bit of money for tooling, would highly recommend
that you check out these guys:
http://www.eraser.com/rotary.htm
The Eraser Rotary Wire Stripper is "the balls" for stripping magnet
wire, any gauge, any insulation class. This tool works quickly,
repeatably, safely, never nicks a wire. Is kinda steep, though, ~ $1200
US, which is why I would recommend it only if you are doing prodcution
work...
W Letendre
Dir Eng
NEAT div of Kollmorgen
Sent via Deja.com http://www.deja.com/
Before you buy.
wjls...@my-deja.com
Try Eraser's Home Page:
"rotary" page covers strippers for hookup wire; home page has vector to
stripper for magnet wire. Unit is rated for AWG9 down to AWG35!
W Letendre
Bill sloman
pmarx...@nospam.unl.edu wrote:
>
> What chemicals will effectively and safely strip the enamel
> from magnet wire? I'm talking about mostly pretty old magnet
> wire, not recent stuff which has coatings *designed* to resist
> solvents.
Molten caustic soda (sodium hydroxide, NaOH) was pretty effective
at Cambridge Instruments. It isn't safe. At Cambridge Instruments
each coil winder had a small electrically heated pot with a
close-fitting lid with a small hole through which they poked the
wire, so the major risk was thermal burns. Burns from molten
caustic soda are really nasty.
Hope this doesn't help ... as a technique I found it terrifying,
but it did work.
Bill Sloman, Nijmegen
khorton
>
>
>pmarx...@nospam.unl.edu wrote:
>>
>> What chemicals will effectively and safely strip the enamel
>> from magnet wire? I'm talking about mostly pretty old magnet
>> wire, not recent stuff which has coatings *designed* to resist
>> solvents.
>
>Molten caustic soda (sodium hydroxide, NaOH) was pretty effective
>at Cambridge Instruments. It isn't safe. At Cambridge Instruments
Wowza! That is pretty nasty stuff... sorta suprised it didn't damage the
underlying wire.
Personally, I've used various solvents to remove the insulation. Takes a
little while to soften some types of varnish, but a little help with a paper
towel seems to do the trick. I've also been known to use very fine grit
sandpaper, but I hate to do this since it removes some of the copper as well
which might cause a hot spot or weakening of the wire where it was sanded.
Another option is to get "solder-eze" coated wire. The heat from a hot (800F)
iron and good flux will remove it pretty nicely (just don't breathe the
fumes).
Ken
khorton wrote:
> >Molten caustic soda (sodium hydroxide, NaOH) was pretty effective
> >at Cambridge Instruments. It isn't safe. At Cambridge Instruments
>
> Wowza! That is pretty nasty stuff... sorta suprised it didn't damage the
> underlying wire.
Copper is not normally soluble in NaOH so it is not surprising at
all. If anything it will leave it nice and clean helping to facilitate
a better soldering operation. Aluminium wire on the other hand would
dissolve in short order rendering it useless.
Regardless it is an operation that is not for the chemically untrained
and there are much safer methods that are less of a health threat than
the one described.
Bill Sloman
linkm...@povray.org wrote:
>
>
> khorton wrote:
>
> > >Molten caustic soda (sodium hydroxide, NaOH) was pretty effective
> > >at Cambridge Instruments. It isn't safe. At Cambridge Instruments
> >
> > Wowza! That is pretty nasty stuff... sorta suprised it didn't
> > damage the underlying wire.
>
> Copper is not normally soluble in NaOH so it is not surprising at
> all. If anything it will leave it nice and clean helping to facilitate
> a better soldering operation. Aluminium wire on the other hand would
> dissolve in short order rendering it useless.
Where do you buy enamelled aluminium wire for transformer winding?
> Regardless it is an operation that is not for the chemically untrained
> and there are much safer methods that are less of a health threat than
> the one described.
Our coil winding personnel weren't chemically trained - beyond being
told that molten NaOH was dangerous. Provided that the molten NaOH
stays in its almost totally enclosed little pot, it doesn't represent
a health hazard, unlike most organic solvents. The schemes that I really
don't like are the ones where you burn off the enamel - the breakdown
products can be quite nasty.
Bill Sloman, Nijmegen
> --
> Ken Tyler - 1200+ Povray, Graphics, 3D Rendering, and Raytracing
Links:
> http://home.pacbell.net/tylereng/index.html
http://www.povray.org/links/
>
--
Bill Sloman, Nijmegen
wjls...@my-deja.com
Bill Sloman <bill_...@my-deja.com> wrote:
> In article <3831EF05...@pacbell.net>,
> linkm...@povray.org wrote:
> >
> >
> > khorton wrote:
<SNIP>
> > Copper is not normally soluble in NaOH so it is not surprising at
> > all. If anything it will leave it nice and clean helping to
facilitate
> > a better soldering operation. Aluminium wire on the other hand would
> > dissolve in short order rendering it useless.
>
> Where do you buy enamelled aluminium wire for transformer winding?
>
Not sure who their wire vendors are, but at least two of the coil
winding shops that we buy motor coils from will wind coils out of Al
wire for us, any of the standard whole and half number AWG sizes.
Moreover, one of them will (at a modest additional charge) squish the
wire flat before winding (without trashing enamel insulation!) and give
us that very nice 4/pi increase in packing density, so beloved by those
of us who fret over making maximum use of B fields generated by those
high priced rare earth permanent magnets...
W Letendre
Dir Eng
NEAT div of Kollmorgen
PS - Use rotary blade strippers, for both Al and Cu wire. Seems to work
OK on flattened wire, as long as aspect ratio not too extreme.
pmarx...@nospam.unl.edu
Wow, lots of stripping options.
We have enough nasty chemicals in our Shop (we develop and etch our
own PCBs) that I think maybe I'll stick with the "wad-of-steel-wool"
technique.
Mikhail Fridberg
Bill sloman wrote in message <38316172...@ieee.org>...
>
>
>pmarx...@nospam.unl.edu wrote:
>>
>> What chemicals will effectively and safely strip the enamel
>> from magnet wire? I'm talking about mostly pretty old magnet
>> wire, not recent stuff which has coatings *designed* to resist
>> solvents.
>
>at Cambridge Instruments. It isn't safe. At Cambridge Instruments
>close-fitting lid with a small hole through which they poked the
>wire, so the major risk was thermal burns. Burns from molten
>caustic soda are really nasty.
>
>Hope this doesn't help ... as a technique I found it terrifying,
>but it did work.
> Bill Sloman, Nijmegen
Long time ago I was using old folks remedy to stripping enamel - put wire on
a aspirin tablet, then put hot soldering iron tip (with solder on it) on top
of it, then pull wire out of that mess. Hot melting aspirin seemed to strip
enamel right off. Try it and see if it works.
Mike.