When hydraulic fittings fail, the results can be catastrophic, as we saw here. Hydraulic hoses themselves are also vulnerable, which is why machines like this tree-processing behemoth will have their hoses wrapped in protective spirals made by companies like Caplugs:

But how do they get the spiral wrapped around the hose? You probably picture some elaborate and gigantic manufacturing machine. Instead, it's a simple rig that amounts to two tubes and a hand drill, demonstrated here by protective sleeve manufacturer Havel:

Inventing jigs like this must be super-satisfying work, especially that first time that you get it to work.

I’m a lapsed industrial designer. I was born in NYC and figured I’d die there, but a few years ago I abandoned New York to live on a farm in the countryside with my wife. We have six dogs.

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