I had the idea to do something like this for a long while, and since I've been cleaning up my workload lately, I figured I'd take the time to try it out. It wasn't nearly as hard or time consuming as I originally thought! I guess I've been getting better at this thing.
I have a few more ideas for hacky sack patterns, so I'll probably do a few more of those in the near future.
Like it? Buy it, and help support me making more ridiculous things out of chainmaille: [link]
Do you mean the weave or the sun and moon designs. The weave is just two expanding circles: [link] with some 4-in-1 on the edges to connect it. As for the design...I just kinda did it by hand, so there's no real pattern for it. I could probably redo it if I set myself to it, though.
Definitely usable. I like using anodized aluminum for these because its tough as nails, but the pattern is nice and malleable, so it doesn't hurt your foot. I was playing with the first one I made at work one day, and accidentally stripped some paint off the wall with it. No damage to the hacky sack though.