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Chopping an HDMI cable in two, then rejoining


paulears

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I have to feed two HDMI cables through a very small gap - the plug end of the moulded cables is too big for the gap, even if I shave off the corners. The cable on my moulded leads will be fine. My plan is to cut the cable, thread it through then repair it.

 

Any tips or no-go areas. It doesn't have to be pretty, just functional. Once in, they won't move.

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Have a look at Celerity. It is a (relatively) cost effective cable designed for running down conduit and chasing into walls. It is an HDMI over fibre product but without the exposed fibre optics. Or go with a cat based solution.

 

I have seen field-terminatable HDMI connectors before - but they required special crimping tools AND when terminated correctly were good for 1080p @ 12m (according to manufacturers spec). The installer however said he would not do it for anything longer than 8m in practice on one that looked really good. The connector was modular with a little 'sled' that slid down the twisted cores to ensure minimal untwisting. A good shield connection was the other crucial part. So I guess if I was to be splitting and re-joining mid cable - ensure you maintian the twists and also make sure you end up wrapping with some foil tape or similar to reshield.

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The gap is literally a gap - between two layers of brickwork - about 8mm, as I can feed a bit of mic cable through it, but not connectors. Appearance isn't that critical - so maybe chopping and then putting a new connector on might be the way to go - I found some HDMI sockets with solder pad terminations.

 

I was kind of thinking about simply stripping back 150mm or so, and then resoldering each conductor staggered over the distance, then wrapping a new screen. End to end, between equipment in the two rooms would be no more than a couple of metres max, I think - say 3 to include a bit of wiggle room in the cabling. Is this a non-starter?

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At 3m total length you should be ok, especially if you are careful to preserve as much of the twist in the cores as possible.

But some equipment is really picky about what it will accept, and some generates flaky HDMI to start with, so the success of your plan will probably depend on what you're plugging between.

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Think they're charging £33 for the 600mm 22mm dia SDS bit, but the 600mm 10mm dia bit is indeed £17 and is probably more useful long term as a cable routing device!

Paul - if you drill through with the 600mm, you can enlarge from each side with a more standard 20mm if you have that?

 

 

 

 

 

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maybe multiple 10mm is the way to go, because I cannot get to the other end with a drill, there's not enough space in the cavity at that end - essentially I have to go in from both ends, and meet in a small one brick 'hole'. I think I can fish from one side of the cavity to the other, but it's awkward.
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