heheeh true mate, maybe i have to try it someday, i think the interior strings should still have the right amount of length to strech like the exterior one. Probably doesnt work ahahha. Thanks very much
Bow strings don't stretch, at least not on ordinary bows. All the elasticity comes from bending the bow itself. I imagine for three strings you'd either need to effectively have three independent bows, or at least two stretchy strings.