Many years ago at Whyalla Shipyards, (which closed down in 1978) there was a device called a Profile Cutter, which followed a line drawing, and transferred details to a motor driven plasma cutter which followed the directions given and cut ship hull construction plates from 1 and 1/4 inch sheet steel.
A fly landed on the drawing and the profile cutter dutifully followed the outline of the fly which resulted in a 12 foot long, one inch and a quarter thick, steel cutout being produced. Apparently the fly flew away just prior to completion of the article, but Boilermakers manually finished cutting the portion of missed wing and one leg. It was displayed behind the construction workshops at the fitting out wharf, a standing joke for several years.
It is unknown what happened to the steel fly because it disappeared one night during 1966, obviously a well planned operation because of its sheer size, and it weighed over a ton and a quarter.
Would have made an interesting photo with an ST standing before it.