I had a forked limb sling-shot too, but the rubber didn't stretch back as far as the one in the video...it's long gone now though. My uncle made it when I was a kid and I always wondered what wood he used to carve it from...but it looked exactly like the one's this guy had in his box, so I guess it was dogwood. My uncle also used to carve out his own wooden top water plugs too. Great video clip, glad you shared it with us.