If I cut a thing in two, are the two pieces together exactly the same size as the original?
Or to rephrase it: does a knife/scissors/etc just split something or does it remove something?
If I cut a thing in two, are the two pieces together exactly the same size as the original?
Or to rephrase it: does a knife/scissors/etc just split something or does it remove something?
The CNC (computer controlled cutters) metals that slide into each other so tightly that you cannot see the seam, are created using 2 separate blocks of metal, one becomes the outer block and the other becomes the inner block, then they’re both polished together to appear seamless. There’s no practical way (as far as I know) to make significant cuts without losing or malforming some of the material (you can cut playdough without losing any of the mass, but it’s bunched up along the cut path.
My very old understanding of how materials behave