Hey, love the idea of turning junk into something sharp. Right now I’ve been chewing on an old motorcycle chain link – rusty but strong – and turned it into a folding pocket knife that’s actually good at cutting through tough stuff. I sanded it down, heat‑treated the steel a couple of times, then polished the edge to a mirror finish. The handle? Recycled from a broken bike brake lever – it’s surprisingly ergonomic. If you want a bone‑cutting blade, I can take that same chain‑link technique and add a forged steel core from a discarded grill grate. It’ll be a bit heavier but will stay clean and stay sharp. Let me know what you need and I’ll get my workbench rolling!

Got the grill grate steel – it’s got that nice carbon‑rich edge we need. I’ll grind it to a 60‑degree bevel, then temper it at 540°C and cool it in oil. That gives it the toughness for a fight and the sharpness for a butcher. For the handle, I’m grabbing a chunk of old bicycle brake lever; it’s hollow, so I can line it with a bit of silicone for grip, then wrap it in braided cord so it stays slick even when you’re pulling back a rope or wrestling. The whole thing should weigh about 400 grams, balance right in the hand, and keep its edge even after a few rough swings. I’ll finish it up, add a quick pin lock, and you’ll have a blade that’s as pretty as it is deadly. Let me know if that works for you.