Making the Leash
By Ryan Jordan
To make an ultralight wrist leash for the Helix using our AirCore Pro Rope (which remains light and strong enough for excellent durability while being thick enough to prevent the cord from cutting into your clothing or skin), do this:
1. Mark one end of the rope using a piece of electrical tape or with a permanent marker, just to distinguish the ends and make these instructions easier to follow.
2. Approximately 16 inches from the marked end, tie an overhand knot in the rope. We'll refer to the rope length between the knot and the marked end as "below the overhand knot" and the rope length between the knot and the unmarked end as "above the overhand knot".
3. Using the marked end as the tag end, tie half of a double fishermen's knot above the overhand knot.
4. Tie the unmarked end to the round hole in the adze end of the ice axe head with a bowline knot. Adjusting the length of the tag end of the bowline knot allows you to adjust the length of the wrist leash.
5. Generally, the length of the wrist leash is adjusted in the bowline knot, by controlling the length of rope between the bowline knot and the overhand knot. The shorter this length, the shorter the leash. It's a matter of personal preference how long you want to make this length. However, a length of 4 to 8 inches is generally acceptable, and provides enough length for you to easily adjust your grip on the axe and to let it hang out of the way from your wrist when not holding on to it to perform other tasks.
6. Generally, the diameter of the wrist loop is adjustable by controlling the distance between the overhand knot and the half double fisherman's knot. Try to fine tune this length initially to accomodate the diameter of your wrist and associated clothing and handwear. Then, in the field, if you desire a smaller diameter wrist hole on the leash, simply move the overhand knot towards the half double fisherman's knot.
7. A wrist leash made in this manner with AirCore Pro Rope will generally weigh in the range of 0.12 to 0.16 ounces.
...From the ULA Helix Ice Axe page in the gear shop: