I’ve wanted to spearfish for ages, and now I finally have an excuse, a week by the ocean with the family. But instead of buying gear, I tried something crazier: can I build a working speargun from ...

Mad scientist Joerg Sprave is chiefly known for his vital work in the world of slingshots, with the occasional detour into some homemade Gatling gun type devices. But lately, he's been investigating ...