scaru

When you say that it is either clenched or unclenched, does that mean it will crush something it picks up? Or does it not apply enough force to crush it?

Also I saw it in the video picking up a piece of piping, but it seemed to have trouble grabbing it. Is there a minimum size for what it has to be picked up? For example, could you pick up a key ring?

Either way great job! I am extremely impressed both with your dedication and the science behind it.

 then we toured around the mainland of Japan, including the places where the bombs had fell.

Wasn't the area still radioactive? If so were there any health problems associated with that?

Also, to the grandchild, did you ever figure out how many of those amber LEDs you needed? :P