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Using paracord 550 for tillering

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FilipT:
Hi, I want to start making warbows and I am currently building heavier hazel longbow, that is supposed to be 70 - 80# at 32" to be as a entry to the whole warbow thing.
Problem is I have paracord 550 for tillering string and I wonder is it suitable for tillering the warbows. I noticed stretch of maybe 2, 3 inches while tillering black locust pyramid bow and I assume that will stretch like ridiculous with heavier bows.
Some guys use it for tillering but I don't understand why does it not stretch for them. I paid same price as everywhere I looked on internet and I bought it from outdoors/survival website.

Does that mean I got the fake one or that it varies in stretch from string to string?

Thanks

Ian.:
You asked a question on the build along thread about dimensions of your bow that's not bending and I could probably answer some of it here. You won't be able to tiller effectively with a stretchy string. Get metal wire cord or thick rope for the tiller. You can get thin but very strong wire which wont stretch at all. That will help in the initial stages of tillering when the bows are really heavy and almost non-bending.

FilipT:
I saw this: http://www.marinastores.hr/product/52-fishing-accessories/1181-superline-braided-dyneema-100-

This is in Croatian language and there is barely any information, but its supposed to be Dyneema rope for using for boats and such. It says that is available in 1, 2 and 3 mm of thickness. I know that individual strands of Dyneema are super strong and non stretchable, but this is some kind of rope, maybe its also good?

Ian.:
Everything stretches, get proper role thick as can go through your pulleys.

mikekeswick:

--- Quote from: Ian. on July 27, 2016, 05:54:45 pm ---Everything stretches, get proper role thick as can go through your pulleys.

--- End quote ---

Not dyneema.....the only stretch you get with dyneema is what is engineered into the cord.
You can buy quality dyneema cord at any rock climbing shop. It is what is used for slings. Ask them for '3mm accessory cord'. The strength of dyneema cord for a given diameter is crazy. I've taken some big falls onto thin slings...;) I remember a friend of mine who has a farm trying to break some old dyneema slings with their biggest tractor....now that was a fun day :)
Or go to a specialist fishing shop and get some 49 strand wire trace (sharks etc) and some 'double crimps'.
Paracord comes in various different types go to the Bushcraft store to see the differences.

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