Made this proof-of-concept up yesterday morning out of scrap line lying around on the coffee table.
Amsteel “dogbone” with GlowWire spliced into it to create daisy-chain loops for hanging gear.
Under tension, the hollow-core, braided amsteel lengthens and that constricts the line around the buried portions of the GlowWire like Chinese handcuffs. If the loops do pull thru and become unnecessarily longer, they can simply be tugged back open since they just lie against the amsteel.
Good for small gear on carabiners, hanging your shoes, or just stuff passed thru the loops.
These could be made right into the lower portions of a Whoopie Sling hammock suspension. With patience, they could probably be done in the smaller 1.75mm dyneema lines like Lash-It, and used on a fixed ridgeline between the ends of a hammock as well.
[… if it’s not clear, the running ends of the loop line are passed around the amsteel and then buried back inside toward the loops]