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Old April 8th 05, 01:14 PM
Ian Stirling
 
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In sci.electronics.design Ross Herbert wrote:
On Thu, 07 Apr 2005 23:21:40 GMT, Bill Janssen
wrote:

Ian Stirling wrote:

In sci.electronics.design Albert wrote:


Does anyone know how to measure or determine the wire size. I have
tons of motors, solenoids, and similar items. I need some #24 wire and
some #30 for a coil, but have to be sure regarding the wire diameter
as it's a critical ap and the author of the article says 'don't
substitute'.


Micrometer.
Vernier caliper may also work.
Either under $30US.


And don't forget to remove any insulation before measuring the wire.


Correct Bill. However DO NOT scrape the insulation from the wire since
this can alter the physical diameter of the wire. It is best to dip a
portion of the wire in fast acting paint stripper and wipe the
softened insulation off with a rag.


Blowtorch to heat to dull red heat, and then wipe insulation off.
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Old April 8th 05, 03:28 PM
John Woodgate
 
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I read in sci.electronics.design that Ian Stirling
wrote (in
) about 'wire size
question', on Fri, 8 Apr 2005:

Blowtorch to heat to dull red heat, and then wipe insulation off.


I'd like to see you do that with 30 gauge wire. For an encore, you could
do it with 46 gauge. (;-)
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
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Old April 8th 05, 09:00 PM
Ian Stirling
 
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In sci.electronics.design John Woodgate wrote:
I read in sci.electronics.design that Ian Stirling
wrote (in
) about 'wire size
question', on Fri, 8 Apr 2005:

Blowtorch to heat to dull red heat, and then wipe insulation off.


I'd like to see you do that with 30 gauge wire. For an encore, you could
do it with 46 gauge. (;-)


Actually, I do it regularly with .15mm wire (I don't know the guage)
Of course, you have to be able to set the blowtorch so that it's producing
a yellow flame that's not too hot, a lighter works well.
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Old April 8th 05, 09:10 PM
Jim Thompson
 
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On 08 Apr 2005 20:00:02 GMT, Ian Stirling
wrote:

In sci.electronics.design John Woodgate wrote:
I read in sci.electronics.design that Ian Stirling
wrote (in
) about 'wire size
question', on Fri, 8 Apr 2005:

Blowtorch to heat to dull red heat, and then wipe insulation off.


I'd like to see you do that with 30 gauge wire. For an encore, you could
do it with 46 gauge. (;-)


Actually, I do it regularly with .15mm wire (I don't know the guage)
Of course, you have to be able to set the blowtorch so that it's producing
a yellow flame that's not too hot, a lighter works well.


IIRC there's something called Formvar that will self-strip upon
application of a tinned iron.

There's also the chemical stripping agents.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
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Old April 8th 05, 09:50 PM
John Fields
 
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On Fri, 08 Apr 2005 13:10:24 -0700, Jim Thompson
wrote:


IIRC there's something called Formvar that will self-strip upon
application of a tinned iron.


---
And, in the process, tin the wire, changing its diameter...

--
John Fields
Professional Circuit Designer


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Old April 8th 05, 09:49 PM
John Woodgate
 
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I read in sci.electronics.design that Jim Thompson
wrote (in
) about 'wire size
question', on Fri, 8 Apr 2005:

IIRC there's something called Formvar that will self-strip upon
application of a tinned iron.


Once upon a time, there was 'flux-enamelled' magnet wire, which was
really easy to solder, but the coating was fragile. Then there was
'solderable', which required an iron temperature substantially higher
than for normal soldering. But that gave off toluene diisocyanate, which
is poisonous if you breathe it for 20 years, so you had to use it under
extraction, and that made it fall out of favour.
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
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Old April 8th 05, 09:45 PM
John Woodgate
 
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I read in sci.electronics.design that Ian Stirling
wrote (in
) about 'wire size
question', on Fri, 8 Apr 2005:
In sci.electronics.design John Woodgate wrote:
I read in sci.electronics.design that Ian Stirling
wrote (in
) about 'wire size
question', on Fri, 8 Apr 2005:

Blowtorch to heat to dull red heat, and then wipe insulation off.


I'd like to see you do that with 30 gauge wire. For an encore, you could
do it with 46 gauge. (;-)


Actually, I do it regularly with .15mm wire (I don't know the guage)
Of course, you have to be able to set the blowtorch so that it's producing
a yellow flame that's not too hot, a lighter works well.


Oh, that's cheating. (;-) When you write 'blowtorch', you should mean
'blowtorch', 1000 C plus.

The almost cool flame of an alcohol burner is good, especially as it has
a large part of its volume that is chemically reducing.
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
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