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 Post subject: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 4:57 pm 
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What is a good way to strip cloth-wrapped wire? I can just use one of my wire strippers for regular covering, and even if I get my box cutter out for the cloth, it still frays everywhere.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 5:02 pm 
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Location: Austin, Texas
Some cloth is intended to be push back insulation. You don't strip it, just push it back to expose some wire.

Jay


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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 5:12 pm 
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First, use flush cutters to cut the cloth covering---starting with a cut where the wire is in line with the cutting blades. There is then typically a conventional plastic insulation which can be removed with regular strippers.

If you have infinite patience, you can also use an Xacto knife with the pointy plade.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 6:24 pm 
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Location: Eagan, Minnesota, USA
I ran into this with my SX-28 I'm restoring. For the original wire, it's the push back type. I just cut the wire to the length I wanted it, and pushed the cloth insulation back. (For new joints with the existing wire). AES sells reproduction cloth wire that is really a cloth covering over white insulation. That type is more difficult to get a clean cut on it. In this case, I first run my wire cutter tool around the cloth covering with the intent to cut the cloth cover first. Sometimes a few threads don't get cut, and I have to use a razor blade to get them. After doing that, I then remove the real insulation like you'd do with any other 'rubber' type wire. In the SX-28, I wanted to use the AES cloth covered wire in some places, and in others, just used the regular insulated type.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 6:33 pm 
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Joined: Jan Mon 18, 2010 2:13 am
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Location: Dayton Ohio
a good sharp quality stripping tool REALLY helps.

I'm sold on Klein and Knipex pliers and use them everyday.

-Steve


Attachments:
File comment: Klein 11057
klein11057a.JPG
klein11057a.JPG [ 24.24 KiB | Viewed 418 times ]
File comment: Klein 11063
klein-stripper.JPG
klein-stripper.JPG [ 17.77 KiB | Viewed 418 times ]

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 10:46 pm 
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Location: Powell River BC Canada
Wax the ends you are stripping first.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Fri 11, 2019 11:00 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Charleston, W.Va.
Hi judge,

The 20-gauge cloth-covered wire I have in stock (in eight different colors) was purchased from RadioDaze several years ago. I use the same method as others have mentioned above: First cut the cloth covering with a sharp Xacto knife or razor blade, then strip the internal plastic insulation with a regular wire stripping tool. A tiny drop of clear nail polish or GC service cement on the end of the cloth strands (applied either before or after stripping) will keep them from un-raveling. Regular carpenters' wood glue also works just as well, but takes longer to dry.

In the "old days", much of this cloth-covered wire was coated entirely with lacquer or varnish which prevented it from fraying.But I know of no current source who can supply this, other than specialty wire suppliers who market it at a very high price. If one is a perfectionist I suppose he could spray the currently-available cloth-covered wire with lacquer and achieve the same results, but I have never personally gone to this length.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 3:55 am 
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Location: Gretna, Nebraska
pixellany wrote:

If you have infinite patience, you can also use an Xacto knife with the pointy blade.


My patience is definitely finite, but this is my preferred method. I could never get a nice clean edge with any other method.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 11:11 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Montvale NJ, 07645
I use a little crazy glue on the cloth end after it is cut to keep from fraying.


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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 5:42 pm 
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Location: 2620 Lake Ridge Ct. Oakton, VA 22124
If I had a large number of wires to strip, I'd try a judicious touch of fire; from a zippo or heat gun. Make a jig to expose just as much of the end as you need to strip.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 6:00 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 3040
Location: Nr London, England, SS1 3PT
Take the cloth off with a scalpel and then melt the plastic with the tip of a soldering iron (cleaned first). Just pull the piece off with finger nails.

Yes! this is not wise 'cos of toxic fumes but do it high and don't breath for a mo ! :D Fortunately I rarely have to use the horrid stuff, to me anyway, as over here we can buy rubber covered, in two gauges, in many subdued colours (all the resistor colour code and more). This strips so nice and easy, just a nick and off it comes.
Attachment:
rubber covered wire.jpg
rubber covered wire.jpg [ 128.72 KiB | Viewed 173 times ]


Gary


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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 6:35 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4387
Location: Charleston, W.Va.
Radio Fixer wrote:
. . .anyway, as over here we can buy rubber covered, in two gauges, in many subdued colours (all the resistor colour code and more). This strips so nice and easy, just a nick and off it comes.

Gary

Hi Gary,
If you can indeed buy real rubber-covered wire in many colors in the UK, then consider yourself very fortunate. I know of no source here in the USA for such wire, other than specialty wire suppliers who market it at a very high price.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 6:47 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Nr London, England, SS1 3PT
I do regard myself as fortunate Poston. It is actually silicon rubber and I buy it at swap meets, thin for general wiring (14 strand) and thick for heaters (21 strand). Lovely stuff to use, no run back, lean the iron on it and it laughs.

Gary


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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 7:29 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 3040
Location: Nr London, England, SS1 3PT
https://www.digikey.com/products/en/cab ... ageSize=25

They have it in 300V and 600V range. Have to buy 25 feet, so for a lot of colours maybe a bit pricy unless you split. Didnt check out the gauges, leave you to do that.

Gary


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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 7:57 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Montvale NJ, 07645
There is plenty of silicone rubber wire available on E-bay.
https://www.ebay.com/sch/i.html?_from=R ... c+tech+inc


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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sat 12, 2019 7:59 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4387
Location: Charleston, W.Va.
Thank you Gary for this link!
I was not aware that this silicon rubber wire could be had here in the USA for such a reasonable price. And the wire manufacturer (CnC Tech) seems to be located in Arizona, USA. They have it available in 16, 18 and 22 gauge.

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 Post subject: Re: How to strip cloth-wrapped wire?
PostPosted: Jan Sun 13, 2019 10:43 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Nr London, England, SS1 3PT
More variety in sizes and voltage rating with Digi Key and hopefully they have their own quality control over the Chinese supplied stuff (300V only). Know where I would go.

Gary


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