Nitinol springs. I make my own for a fraction of the cost and use only body temperature or above 78f and they reform after I stretch them out 8 times there normal ... do take a while to make.
by Billy C. LeWorth
by desertsun02
by AX Creates
by FishkiShow
by Martynas Sprogys
by Diamleon Diy Builds
by Oussama Ousmoi