Forums: Climbing Information: Gear Heads: Re: [gthomann] Sewing your own slings: Edit Log




acorneau


Oct 19, 2010, 12:12 PM

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Registered: Feb 6, 2008
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Re: [gthomann] Sewing your own slings
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gthomann wrote:
I have seen previous threads in 2001 & 2004 on sewing slings but am starting a new one. I have always been interested in sewing slings; I once tried with my 30 year old Kenmore but was not very successful. Recently I got a Brother Project Runway PC-420 computerized machine and decided to try again. I bought some SpiderWire Stealth Braid spectra 10 lb test fishing line. Its diameter is about 0.01 inch, supposedly about the maximum diameter thread you can use on a home machine. I got the braided line because it seemed to be the most flexible.

I used regular 1 inch tubular webbing. I started with a No 8 needle and broke it and switched to a No 10. I used a zig zag stitch and tried stitching both across the webbing and parallel to the edge. The webbing is pretty bulky and initially I had some problems but by sewing slowly I got to where I could stitch without any problems.

The problem in making slings is testing; it is hard to figure out a way to put one or two thousand pounds of force on them. So what I did was make some loops with just a small amount of stitching and test them using my 180 lb body (in the living room, not on the cliff). The attached picture shows a test loop with 37 stitches; it held my weight with no problem. The red webbing with the loop on the end is a finished project; it has a couple of hundred stitches. I am not making slings to fall on, just stuff for top roping. After my testing I have complete confidence in the loop on the red webbing.


I do believe the most appropriate response would be...

"Yer gunna die!"


That being said, I'm glad you're interested in something climbing related like sewn slings.

Assuming your interest lies in the process and the engineering behind the process, and not just a desire to save money, why not contact some of the smaller companies that sew climbing gear (like Yates, Mountain Tools, Misty Mountain, etc.) and ask them some specific questions as to why things are done the way they are done in the professional gear manufacturing world. You might get some great insight and information.

Honestly, it would suck very much if you were to get hurt or killed by something you thought you had figured out.

Good luck.


(This post was edited by acorneau on Oct 19, 2010, 12:25 PM)



Edit Log:
Post edited by acorneau () on Oct 19, 2010, 12:25 PM


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