When he's saying string line does he mean masons twine? The yellow, pink, lime green stuff on spools? If that's what he's using, my hats off to him! Makes me nervous tying up beans with it!
No...I'm talking about the line that excavation companies use to set grade for roads and curbs. It's Usually white in color and is Extremely Strong, Dries Quick and Does Not Snap like some lines or ropes and rarely if ever tangles. Since it's designed to be used and re-used over and over outside, it doesn't wear out easily. I have no idea without looking at the boxes what the composition is.
It is not large in diameter...I use it on anchors and canopies too. I'll throw a high dollar magnet with this line any day.
Knowing how to tie good knots is a benefit for sure and this line doesn't loosen easily like some do.
Kace