Some of Criggie's comments are redundant for the latest available RJ45
plugs and crimp tools.
The new type come with a little insert which easily allows each of the 8
conductors to be inserted separately then pulled through tightly. This
"insert" with all conductors in the correct order is then easily inserted
into the body of the plug and crimped.
I am not sure if it means that you need a special crimp tool or not but I
have used my son's crimp tool with the new type of plug and wished it was
invented years ago.
Rob
On 7 March 2016 at 13:23, Criggie wrote:
> > I was once detailed to make ethernet cables. They worked, initially.
> >Later they failed.
> >There was some sadness, cause failure mode was intermittent failure. .
> > My suggestion is that you take Hadley's approach::
>
>
> Having done cable monkey stuff for a long time, there are some flaws and
> some things should be clarified.
>
>
> Making your own cables is perfectly okay, as long as you do it right.
> This means using a crimping tool, not a screwdriver.
>
> It also means using the right plugs for the style of cable you use.
> For patch cables that means stranded cable and stranded-compatible plugs
>
> Don't ever use solid core ethernet cable for patch leads, not ever. They
> work for a bit but degrade over time due to movement. Solid core is fine
> for in-wall installations where it will not move ever, and its a little
> cheaper. Don't kid yourself that your "patch leads rarely change" This
> is a false economy.
>
> Do get a tester too - they show pair-flips and when a link is
> disconnected. Very handy, expecially the near and remote units so you can
> test a cable where the ends are not close together.
>
> Get a proper stripping tool too - these cost under $10 and save so much
> hassle.
>
> Expect to bugger up a bunch of plugs getting the trim lengths correct.
> Yes they're magic and the wires move in the plug between insertion and
> crimping. Check them before crimping.
>
> If doing the shortening thing then consider that some cables are wired
> with different colour schemes. They are compatible if you use the same
> colour coding on both ends.
>
> Get yourself a colour cheat card too - and reference it. Is easy to go
> wrong and noone likes redoing work.
>
>
> The cost of all the tools means its probably not financially feasinible
> for ones or twos, but tools are for life and I personally don't regret
> dropping several hundred dollars on the gear over 10 years ago.
>
>
> Finally - Don't overload the RJ45 connector. I understand you're not
> putting ethernet over this - but what happens if someone connects their
> computer, or worse plugs one of these leads into a switch? Definitely
> label them clearly, and if you can afford to look at colour-coded wall
> jacks and plugs.
>
> ** I have seen a "Power Over Cat5 spare pairs" bodge connected to a
> switch. Amazingly it kinda worked, but fried a couple weeks later.
>
>
>
> --
> Criggie
>
> http://criggie.org.nz/
>
>
>
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>
--
Robert Fisher
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