Half a croissant, on a plate, with a sign in front of it saying '50c'
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Christmas LED lights razor wire

Spirit of the age
  [vote for,

Looks like a string of regular LED coloured and/or flashing Xmas lights, but they're blended with a reel of high grade stainless steel razor wire.

Place on the perimiter of your property and enjoy a merry display of cheerful lights, adding both aesthetics and improved security to the festive season.

By popular demand, now also available in tinsel for application to indoor and outdoor Xmas trees.

8th of 7, Nov 30 2016

An attactive nusiance ? https://en.wikipedi...e_nuisance_doctrine
If children are around, you will likely be sued. [popbottle, Dec 01 2016]


       I'm more of a bah humbugger myself, but I like getting two jobs done with one tool, and the new LEDs can be pretty (+)
normzone, Nov 30 2016

       Spreads holiday cheer in prisons too! [++]
whatrock, Nov 30 2016

       You should market these as razor wire alert holiday lights.
tatterdemalion, Nov 30 2016

       Please clarify what you mean by "blended". For example, if you just have a razor wire twisted with a string of lights, when they are wound and unwound from the spool, the razor may end up cutting through the insulation.   

       I think what you might need to do is use the stainless steel as the hot conductor (which has the added benefit of making it an electric razor wire fence). Now LEDs want a much lower voltage than an electric fence, and you need a ground wire as well. With high voltage and a point, you can get electrons to shoot off into the air. I'm not sure if you could get enough current to light your LEDs that way. Another possibility would be to have enough wire on the other side of the LED to act as an antenna, then use high frequency AC. (Don't tell the FCC).
scad mientist, Nov 30 2016

       Mmmm, Tesla coil, mmmmm ....
8th of 7, Nov 30 2016

       This is a good one. [+]
doctorremulac3, Nov 30 2016

       Yes, we're back on form ...
8th of 7, Nov 30 2016

       Perhaps run huge voltage on the razor wire and have a 2- volts-less wire to serve as ground. This should light the LEDs, and when a miscreant encounters the razor wire they'll supply their own ground and, well, a good time will be had by all.
whatrock, Nov 30 2016

       ... and there was Much Rejoicing.
8th of 7, Nov 30 2016

       [whatrock] How to you intend to make sure the high voltage and high voltage - 2V wires won't short out? It's back to the original problem I stated of the insulation getting sliced by the razor wire. Shorting out the LED circuit won't affect the ability to shock intruders, but it could make the LEDs stop functioning
scad mientist, Nov 30 2016

       Reminds of the days of yore - well actually mine - where one bulb out in a string shut down the whole string, and you tested the string bulb by bulb. Series, I believe they called it.
normzone, Dec 01 2016

       Wind them around the abandoned cars and the bridge over the swimming pool so the kids lawyers will have a slam dunk case. See link
popbottle, Dec 01 2016

       Quite right, [scad].   

       One might covertly leave the separate accompanying multitudinous strings of LED lights unlit until said miscreant touches the highly-charged razor wire whereupon a relay closes, illuminating the lights and simultaneously blasting a rousing chorus of "Shock The Monkey".
whatrock, Dec 01 2016

       Spirit of the (r)age.
AusCan531, Dec 01 2016

       Razor wire usually has the razors at regular intervals, right? It surely isn't that difficult to wind ordinary christmas lights around it and avoid them.   

       Alternatively, instead of razors, you could make the LED bulbs out of bits of broken glass.
mitxela, Dec 01 2016


       Maybe that Trump chap will buy some or get someone else to pay.
DenholmRicshaw, Dec 01 2016

       + undeniably brilliant
xandram, Dec 02 2016

       [mixtela] I was going to suggest a system for making sure the wires didn't touch the razors, then I realized that wire is normally stored on a spool before installation. I assumed the same is true of razor wire.   

       After some research I see that razor wire comes in neat spirals (like a slinky) with all of the blades lined up, so it actually might work to just run lights along with them.   

       I shouldn't have been surprised to find that it's available on amazon.com ("in stock, arrives before Christmas"). Also not surprising is that the number 1 entry for "What do customer buy after viewing this item?" is cut resistant gloves.
scad mientist, Dec 02 2016

       //Series, I believe they called it.// You could presumably do that with LEDs - just wire 120 of them in series, put 240V mains across them, and you'll have 2V drop across each one.   

       If you wanted to be clever, you'd have two such series in anti-parallel, to make use of both halves of the AC cycle.
MaxwellBuchanan, Dec 03 2016

       // do that with LEDs //   

       I once tried it, years ago, just to see why mains LED light bulbs have such elaborate power supplies in them. I bought a few hundred white LEDs on eBay and took a hefty diode bridge and capacitor from an old TV.   

       It failed in an unexpected way. The whole series lit up, but within seconds many of the LEDs died. But they died in a way that didn't break the chain, just stopped emitting light.   

       I think what happened is the forward voltage of each LED is slightly different due to manufacturing variations, but the series means every LED has the same current going through it. So some of them form a blockage in the chain, which then feels a voltage high enough to break it, and break it in a way that it stays conducting.
mitxela, Dec 03 2016

       I think you're probably right, [mixtela].   

       I recently bought some cheap LED floodlights which may be wired in the same way. Many of the LEDs have failed.
MaxwellBuchanan, Dec 03 2016

       You should have bought your lamps from BorgCo ....   

       <Ernst Stavro Blofeld>   

       "This organization does not tolerate failure ..."   

       <Ernst Stavro Blofeld/>
8th of 7, Dec 03 2016

       //bah humbugger myself// made me chuckle   

       Got a snow gun and some Luminol. Pretty Christmassy patterns between flashes.
wjt, Dec 05 2016

       "Just put these goggles on ... this year, we've decorated the hallway on an edgy, innovative arterial-spray-and-ALS theme ...."
8th of 7, Dec 05 2016

       Very bright idea. You one colorful guy, with a sharp sense of humor. (ducks, waves, Hi [Denholmie]!!!
blissmiss, Dec 06 2016

       // why mains LED light bulbs have such elaborate power supplies in them //   

       LEDs don't work well when you try to put a fixed voltage across them. Small part to part variation, changes in temperature, or slight changes in voltage will result in a huge variation in the current. You need to control the current. The easy way to do that is with a resistor in series, but that's not terribly efficient or accurate. The "better" way to do it is with a power supply that measures the current and keeps that constant with a feedback loop.
scad mientist, Dec 06 2016


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