Here's my experiment lately, on a piece of thrown away ABS plastic sheet from a former job. I screwed up the loong TBG full butterfly bands, and they came out as really thin straights instead of the taper I was after It ended up like this: I folded the bands over double at the fork tie, and 120 mm(4.75in) from that tied on to the main band. Overall fork to pouch 407mm(16in.). I've been drawing it 1600mm(63 in.). This is easy to hold, yet refreshingly destructive. Even in the cold weather it makes a good thump. The plastic is polished with scotchbrite red and then 500 grit emery cloth until clogged and then burnished with the loaded up fine grit cloth until nearly mirror smooth. This material dents so easily it is surprising how tough it is. Before shaping I put the rough sawn blank in a vise and tried to break it off with a heavy hammer. Vise jaw prints were the worst of the damage. If anyone else shoots with flats tied up like this I'd love to hear your thoughts on it. Might become a good use for those weird short pieces of TBG that keep appearing here.