1.8 mm Throw Line

A 1.8mm throw line is the thin, low-friction cord you tie to a throw weight to set a climbing or rigging line in the canopy. At 1.8 mm it is on the thin side for throw line, which helps it fly farther and slip over unions easily.

Thin line, longer throws

Throw line comes in a few diameters, and thinner line weighs less and drags less through the air, so the weight carries farther. It also slides over branch unions with less friction, which makes isolating a tie-in point easier. The trade-off is that very thin line tangles more and is harder to handle with gloves on.

At 1.8 mm, this line is on the thinner side. Use a cube or bag to keep it organized, and pair it with a throw weight sized to your canopy. See more in our throw line section.

Thin line is also less likely to damage bark or pull small branches down as it runs, and it takes up less space in a throw cube. Practice a clean throw-and-retrieve routine on the ground first so that the line does not snarl the first time you need to set a high tie-in.

Use and care

Throw line is for setting lines, not for life support or lifting loads. Once the throw line is set, use it to pull up your climbing line, then inspect the tie-in point from the ground before you commit to it.

Keep the line clean and dry, check for nicks and glazed spots, and cut out damaged sections. Store it in a cube so it pays out cleanly on the next throw.