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Ryan

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I posted this on jalopyjournal.com this morning and figured some of you might find it useful as well.



I’m still working on the last installment of my Briggs Cunningham series, but needed to take a little bit of a break from writing due to a home improvement project I’ve tackled this week. And in doing that, I was reminded of a tutorial that Tardel once gave me on the lost art of lacing cable.



I’ve seen quite a few hot rodders use laced cable, so I don’t guess the art is too lost around here… But every time I do it, I have to go back through the tutorial just to remind myself how it’s done. And that’s exactly what I did yesterday when I tackled a bundle of A/V wire that needed to be ran cleanly through a wall. I figured I might as well double down this morning and post about lacing here as well.



Cable lacing is simply a method for tying wiring harnesses and cable looms. It’s an old technique developed in the aerospace industry and later adopted by everyone from linemen to...

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RPH

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Nice, very nice work. Had an electrician at work that would lace up the high frequency output cables on the induction equipment. Shows care and concern to me by the one doing the task. As a field guy I appreciated that quite a bit.
 

gahrajmahal

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How do you calculate the initial length of waxed linen? Is there any way to add length once you have started the lace job and come up short? I’d hate to have to cut it loose and start over. I do hate having to cut a bunch of nylon zip lock ties when I miss a wire or have one wrapped around something unintended.
 
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Ryan

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How do you calculate the initial length of waxed linen? Is there any way to add length once you have started the lace job and come up short? I’d hate to have to cut it loose and start over. I do hate having to cut a bunch of nylon zip lock ties when I miss a wire or have one wrapped around something unintended.

I never cut the cord until I’m done with the loom… I work off the reel.
 

rlitman

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I never cut the cord until I’m done with the loom… I work off the reel.
Yep, you tie down the free end and move the spool. I've got what amounts to a flat crochet hook that was made for Ma Bell that helps pull the line through tight spots. The hook is probably 60 or more years old, but the cable lacing technique certainly predates any semblance of an aerospace industry, as Bell was using it long before Edison used it for his DC electric distribution.

Speaking of DC, I've got a customer in the telecomm industry that has a 48V DC plant that's chock full of beautiful lace work that I unfortunately cannot show here.

I find cable lacing is super easy and quick, once you realize its just tying clove hitches over and and over. Here is a link to a tutorial that I did in my rebuilding Monarch 10EE lathe thread.
I remember thinking now nice that looked. I'm generally the lazy type to go with zip ties (though I'm totally **** about clipping them flush so they're not sharp), but I feel there are times when lacing is just far superior, and your use where vibration and heat come into play would likely destroy zip ties in a few years is a great one for lace work.
 

TheRealZeus

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Great article. I have run my fair share of spools… copper, and nylon. 🧵 🧵 🧵 Just the tutorial guide made my numb hands hurt.

Great history almost all forgotten.. In the last picture, the black tiles are cable lays.. abandon cutout cables, under new installations. Electrical trench warfare at it’s finest. 😄 ⚡️ The transmitter site was opened with a ceremony.. JFK was the speaker. The Site was called the Edward R Murrow building. Truely a great work experience, and terrific, knowledgeable people.
 

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WoodsTruck

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When building looms in place, I tend to use the bread bag wire ties to keep bundles together and it allows me to hang them to things. I can add or subtract wires by untwisting and retwisting, instead of cutting and replacing a zip-tie. Once it is all done and dressed I can put a loom sleeve on it.
 

Grant Gunderson

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Yep, you tie down the free end and move the spool. I've got what amounts to a flat crochet hook that was made for Ma Bell that helps pull the line through tight spots. The hook is probably 60 or more years old, but the cable lacing technique certainly predates any semblance of an aerospace industry, as Bell was using it long before Edison used it for his DC electric distribution.

Speaking of DC, I've got a customer in the telecomm industry that has a 48V DC plant that's chock full of beautiful lace work that I unfortunately cannot show here.


I remember thinking now nice that looked. I'm generally the lazy type to go with zip ties (though I'm totally **** about clipping them flush so they're not sharp), but I feel there are times when lacing is just far superior, and your use where vibration and heat come into play would likely destroy zip ties in a few years is a great one for lace work.
Thanks. I find both options have there time and place. Lacing allows for much tighter bundles, but it’s also good in high Ozone environments such as electrical motors that would destroy zip ties.

I like to use the hooks out of my Moody Tools Spring tool set.
561E85AB-049A-4D77-ACEB-8FC98587BB71.jpeg
It’s funny other than lacing I don’t think I have used that spring tool set since I was doing camera repair work 20 years ago!
 

Miss the Pontiacs

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I used to lace cable and might do it again if the opportunity presented itself for a project. But even when I first started working tywraps were taking over. I still have a couple of spools of waxed string, but use them now for fishing walls or vacuuming conduit runs.
 

Grant Gunderson

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Agreed, but just one thing. Brushes create ozone continuously by arcing. Your 3-phase motor shouldn't be creating ozone except perhaps when the contactor changes state.
True, but this way if the next owner in 80 years lets the brushes go as far as the last guy did, they wont have to worry about the lacing... :lol:then again I doubt the Zip ties would make it 20 years. Lets face it the real reason I did the lacing is, it just looks cool.
 
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Adaylate

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Hadn't thought about lacing for awhile but feel like I must have done a mile of it when doing railroad signal wiring in the 60's and had the callous to prove it!
 

Bob B

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... And the FAA lacing poop. Starts way down on pg. 9-88. (The pdf weighs in at just over 302 MB.)


This is manual is number one of a 2 volume set and contains loads of other juicy content.

The FAA has an abundance of other freely† available material on their website. (Many of them begin with 'AC', which is short for 'Advisory Circular'.)

†Well, not really all that 'free'; in reality we've already paid for it all.
 

Squankum

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Never heard of it!

Jay Leno has shown the wiring behind the instrument cluster on one of his old Lamborghni Espadas, and it looked nothing like this! More like a spaghetti accident.

I saw a neat article a few months back about how an auto parts supplier with a facility in Ukraine was moving its production into a giant, Soviet-era bomb shelter. The photo included a pic that I think is from that company's Syrian facility, and it shows you what a mess modern wiring harnesses can be:

1658509544961.png

I can't make the article link work today, but here it is:
 
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honcho

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Lacing was dying out in military telecommunications in the 80s and 90s. Old-timers took pride in their installations but things like factory terminated fiber optic cables along with massive adoption of commercial off the shelf equipment, particularly in fixed facilities, hastened the demise of lacing. Dacron polyester was the standard lacing material in the facilities I worked in.
 

Speleo

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U.S. Army telecommunications school 1974, we had a weeklong or longer course in cable lacing, for Central Office installation. Instructor would look at your work, lacing 6 or 8 or 10 cables in a tray. He would take an Exacto knife and cut the lacing, laying the knot open. any crossed twine, hidden under of cable, would be counted as a fail. We learned attention to detail, and a fine craft, using "Chicago knots" and such.
 

Cooter Brown

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My grandfather started at Western Electric in 1922, my father in 1955. Dad eventually transferred to Southern Bell. Both were attached to Bell Labs at one point during their careers.

They could both lace beautifully. I still have a couple of spools of the waxed cord. Dad called it "10 cord" or "12 cord", the 12 cord being thicker.

This is a pic of Grandad during WWII, at Florence Army Air base in South Carolina. He was working for Western on comm projects at bases all over the country. Dad was on New Guinea.

Grandad's the one scratching his chin:

yP5FbXW.jpg

A closeup of some lace work on the equipment:

gbxxwWz.jpg




Thanks for bringing back a few memories.
 

eejack

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We still use lacing in DC voltage racks in utility work and on relay racks. There is something soothing about doing lace. It really cannot be hurried and it can become quite pleasant to look at versus tywraps.

Occasionally I will lace something unexpected, like a standard power panel or a control cabinet just to show the kids what an old timer can do.

And it really makes you plan out your work. You want your wires to break out nicely, without crossing out of the bundle, which takes forethought. All around a nice way to make a living.

...it does make my fingers hurt doing it all day though.
 

silkman

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Interesting read. Its also noteworthy to know that car cable looms are still made by hand, like in the 70s.
 

Mr. Roboto

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I worked 40 years for a major defense contractor that built military recon aircraft. I have seen more miles of laced cables than I care to count. it's a learned art to do it well and quickly.

I too work for a defense contractor. This art is still alive and well on the older designed systems that we build.
 

JeffDM

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I never cut the cord until I’m done with the loom… I work off the reel.
Seems to need technique not covered in the diagrams in the original post.

There's a place for lacing but I don't want anything to do with it.
 

GirchyGirchy

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I remember thinking now nice that looked. I'm generally the lazy type to go with zip ties (though I'm totally **** about clipping them flush so they're not sharp), but I feel there are times when lacing is just far superior, and your use where vibration and heat come into play would likely destroy zip ties in a few years is a great one for lace work.
A zip-tie cutter's the only way to go. Quick and clean.
 
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