Wanted to modify my Black & Decker Weed Whacker, so it would be easy to replace the Cutting String. I used 7/16 Dyneema Rope (which is almost indestructible) as a replacement for the original cutting string.
It is an easy print, 2pcs and no supports required.
I used PLA with 3 walls, 3-Top, 5-Bottom and 10% infill.
The Dyneema Rope lasts a long time and is very easy to replace.
to make extra Cutters, cut the Dyneema about 7" long and tie Knots 5 1/2 " apart.
Happy Weed Whacking