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I built a spreader using steel double lock snaps from a NIB fall restraint lanyard and a 27 kn 50" webbing loop. I ran a bowline with blight to each double snap and one to where my steel 50 kn auto locker carabiner is. With exception of carabiner all knots are loaded and set directly on snaps and carabiner has just enough room for carabiner to pass through. Carabiner is made with knot from doubled loop and ends are just one layer of loop. So in another words there is 4 strands on blight at top and two per snap. Is this a solid use of knot? This is my attempt at reducing triaxial loading of carabiner

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    A picture would be really helpful; I'm having trouble picturing the exact configuration. – requiem Sep 27 '15 at 5:57
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    Additionally to requiems question: Providing the use case would help answer it as well. – imsodin Sep 27 '15 at 16:33
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    Is this a climbing situation? – Chris Mendez Oct 3 '15 at 18:37
  • Pardon my ignorance, but what are those things used for? I've never seen such a thing as the one shown in the answer by @ShemSeger. (And I can't imagine of what use they would be in a climbing context.) – anderas Oct 13 '15 at 10:46
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If I may simplify your question, you have a sling of webbing, you've tied a bowline on a bight into each end, and then folded it in half and tied another bowline on a bight in the middle.

Something like this:

(Using Climbing carabiners and 120cm 22kN runner)

enter image description here

And you're wondering if it's a good substitute for one of these:

enter image description here

Sure, it'll work just fine, but it's a bit unorthodox, I've never heard of anyone using a bowline on a bight in webbing before.

Tying knots in a loop of webbing makes sense if you're trying to take up some of the length of your sling, or prevent the biners/clips from moving around, but a loop is a loop, and knots make slings weaker. You could just as easily do something like the image below and it would be simpler, and stronger:

enter image description here

Using a system like this, the longer sling is going to be more comfortable, and if you want to put knots in the webbing I recommend just using girth hitches or water knots instead of bowlines.

Even still, it won't work as well as a spreader bar, if you want the comfort you should just invest a good separator spreader bar. They aren't all that expensive.

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