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DIY captive stud terminal strips

 
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nuckolls.bob(at)aeroelect
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PostPosted: Mon Dec 18, 2017 12:18 pm    Post subject: DIY captive stud terminal strips Reply with quote

A short time ago we had some discussions that
included the mention of a technique for crafting
captive stud terminal strips.

Just ran across some pictures of an exemplar
technique . . .

https://goo.gl/cMQtA4

The base is crafted from some durable insulating
material. The article illustrated is built on a
piece of Delrin. Alternative materials include
6/6 nylon, phenolic, PVC and some thermoplastics.

Counter-sink the studs about 0.03 under-flush
and back-fill with epoxy . . . JB Weld is good.
Bob . . .


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raymondj(at)frontiernet.n
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PostPosted: Mon Dec 18, 2017 2:15 pm    Post subject: DIY captive stud terminal strips Reply with quote

Many JB Weld products are steel reinforced.

Is it possible that the JB Weld used to secure the bolts might be
conduction path if the terminal strip is mounted on a conductive surface?

Raymond Julian
Kettle River, MN

The things we admire in men, kindness and generosity, openness, honesty,
understanding and feeling are the concomitants of failure in our system.
And those traits we detest, sharpness, greed, acquisitiveness, meanness,
egotism and self-interest are the traits of success. And while men
admire the quality of the first they love the produce of the second.
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On 12/18/2017 02:18 PM, Robert L. Nuckolls, III wrote:
Quote:

<nuckolls.bob(at)aeroelectric.com>

A short time ago we had some discussions that
included the mention of a technique for crafting
captive stud terminal strips.

Just ran across some pictures of an exemplar
technique . . .

https://goo.gl/cMQtA4

The base is crafted from some durable insulating
material. The article illustrated is built on a
piece of Delrin. Alternative materials include
6/6 nylon, phenolic, PVC and some thermoplastics.

Counter-sink the studs about 0.03 under-flush
and back-fill with epoxy . . . JB Weld is good.


  Bob . . .






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user9253



Joined: 28 Mar 2008
Posts: 1907
Location: Riley TWP Michigan

PostPosted: Mon Dec 18, 2017 4:01 pm    Post subject: Re: DIY captive stud terminal strips Reply with quote

According to JB Weld website
https://www.jbweld.com/pages/faqs
Will J-B Weld conduct electricity?
No. J-B Weld is not considered to be a conductor. It is an insulator.


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nuckolls.bob(at)aeroelect
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PostPosted: Mon Dec 18, 2017 4:47 pm    Post subject: DIY captive stud terminal strips Reply with quote

At 04:14 PM 12/18/2017, you wrote:
Quote:
--> AeroElectric-List message posted by: rayj <raymondj(at)frontiernet.net>

Many JB Weld products are steel reinforced.

Is it possible that the JB Weld used to secure the bolts might be conduction path if the terminal strip is mounted on a conductive surface?

Raymond Julian
Kettle River, MN

Not sure how much the epoxy's strength
can be attributed to particulate steel . . .
but the data sheet . . .

https://goo.gl/mHXUZX

suggests that any electrical contact between
such particles is nil to zero

volume resistivity of JB weld is 3.16 x 10^15
while that of copper is about 1.7 x 10^-8
if I recall correctly. This means that JB
Weld is pretty good electrical insulator!






Bob . . .


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