Cool find J!
The mention of thongs is likely just referring to the cords and not the pouch itself. The hemispheroidal shape should be half of an elongated sphere. So yeah Sarosh, I think the pouch in the video you posted could be similar. Although a wooden one obviously wouldn't bend around the stone.
The thought of a non-bending pouch reminds me of the last sling I made for the trash sling challenge (
https://youtu.be/dXSQnTlheCg). It was cut from the top of a bottle. The sling didn't have the smoothest feel because of its overall construction, but the pouch release itself did feel clean.
I'll see if I can find a piece of wood (and some time) to shape it down.
Sir Missalot wrote on Jun 10
th, 2021 at 7:45am:
With the price of lumber in the US these days, I don't know if I could afford to experiment too much.
Just get yourself a tree branch and a whittling kit.