sometimes you get the impression that a puzzle was designed to make you look like a fool. immortal filament might be such a puzzle. accordingly, this feels to me like a joke of a solve, but it's the best i could do.

as usual, i'm likely the victim of a bad first idea drowning out all the better ones. wasteless algorithms seemed much too expensive and instruction-heavy to justify. another arm to make this 1/2P might save about 40 instructions, but would add some of those instructions back as well as another 30g and extra area. 