Ok, I confess, I got that chocolate mold
I must be addicted to chocolate
Actually, I didn't have chocolate around so I first tried it with the salt water taffy candy Mike left but the resulting top was too sticky to wrap. So I then tried it with
ShapeLock , a moldable plastic. This plastic becomes soft enough to shape by hand at 65C (150F) and hardens below 55C (130F). According the the website it is machineable and easy to saw, drill, tap and mill although to me it feels a little too rubbery for that. Anyway, this was my first experiment with the material and I got a working spintop:
I can boomerang it but it doesn't spin long on the hand. On the floor it spins ok.
I am thinking that a boomerang with one made out of chocolate will be challenging, specially if I want to eat it, but I need to try