Grappling Hook - Steel Core
Description
This is the more complicated version of my grappling hook that I actually printed before I made the <a href="https://www.thingiverse.com/thing:6707675">simpler one here</a>. I had intended to use M4 threaded machine screw for the core, but none is available near me, so I used a threaded steel rod I found in the basement, which is likely a 10 Ga rod. I threaded the rod through the holes, thus setting a thread, then gently threaded the whole ensemble on. A nut is on either end of the threaded rod. I printed with 1.2mm thk top & bottom, and 2mm thk walls. 5% infill. ~15hr print. It pulled up my auntie's kayak just fine. It does bounce a bit though.
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