posted 3 years ago
We've got a brushcutter with a metal blade. It's not great for grass, though. My husband bought some thin aircraft cable and made a thing he can attach instead of the blade. A length of aircraft cable goes on each side, like a string trimmer. Seems sketchy to me, but he likes it.
He left a piece of the cable outside for a bit to see how quickly it rusted. It was fairly quick, so the little bits that break off during use should rust away in an acceptable amount of time.
It takes a couple minutes to cut and attach the lengths of cable, and they last 20-30 minutes of use. Best to have a few made up in advance so you can just quickly swap them out when they wear down.