Why do weed whackers/weed eaters often use plastic string and not metal wire?

Question

Why do weed whackers/weed eaters often use plastic string and not metal wire?

In: Other

Answer 1

You can but plastic twine with a metal core if you’re dealing with a bigger area or thicker weeds. Typically commercial weed eaters. I used a larger Guage called alligator for my Sthil.