- 12 feet of 1/2 inch webbing
- 1.5 feet of 1/2 inch webbing (different color than above)
- 12 feet 1/8 inch elastic shock cord
- 3/8 inch swivel or bigger
- 2 carabiners or Spring Snaps
- Two colored webbing is not necessary, it's just nice to be able to distinguish between the separate pieces of the umbilical quickly.
- If you are using spring snaps, make sure these fit in the bottom of your tool.
- You can really use anything to connect these to your tools, from
small plastic carabiners to key chain rings.
- This took me about an hour to do, including an initial failed
- Buying "12" feet of webbing is not necessary, you could measure the amount you need in store and purchase only that amount. I estimated 12 feet because I figured only a giant would need more than that.
- You can use a lighter to melt the ends of the webbing back together
so they don't fray. Kids ask your parents for help.
- These umbilicals are not meant to be used as a personal anchor system or as a "back-up" while placing a screw. They are not load bearing.
- I used two small, C.A.M.P Nano 23 carabiners to attach to my tools. If you use any kind of attachment method that isn't "full-strength" make sure they don't accidentally get used on your rack. While they may be heavier, I opted for full-strength carabiners to avoid any mistake.
- Notice where I girth hitched the blue piece of webbing, to my two tie-in points. If you girth hitch anything to your harness, be it a sling, daisy chain, or umbilical, do it to your tie-in points. Girth hitching to your belay loop limits its ability to rotate, which is important for reducing wear on one specific part of the loop. A good rood of thumb is that all soft goods should be attached to the tie-in points, and hard goods clipped to the belay loop.
- Over time, I found that I prefer to actually clip these to my belay loop, instead of girth hitching. Clipping allows me to remove it quickly with gloves, and is worth the little extra weight in my opinion.
-Andrew Yasso, Alaska Range Program Coordinator and Guide