Can anyone say, painstaking? I can imagine all sorts of semi-automated ways of making these sculptures. But anything short of a laser cutter and a robot assembler is still going to take you till the cows come home.
In most art, there’s always an element of "how’d they do that?" But here, I think the secret is shared by Jen Stark’s x-acto knife salesman and a great big knob on her middle finger.