A more advanced fidget gadget from Chris Bathgate
by Cory Doctorow from on (#22E3N)
https://www.youtube.com/watch?time_continue=1&v=THOIp4yXZkc
Sculptor-machinist Chris Bathgate has improved on his Slider "worry-stone" gadget for occupying your nervous hands, using techniques he learned through his collaboration with spinning top-maker Richard Stadler. (more")