The heart of the technology lies in its hydrophilic ratchet structure. These specially designed teeth create a tiny "water bridge" that traps microplastics and holds them in place. The drone ...

Many ratchet manufacturers suggest a specific lubricant ... ratchets because it’s lighter and won’t gum up the smaller teeth of the internal mechanisms but will stick to the surface better ...

moment for [Leo]. For a ratchet, he used a strip of bandsaw blade oriented so the teeth point upward. A complex bit of spring steel, bent to engage with the blade’s teeth, forms a pawl to keep ...