hand-cut aluminium alloy plate, nary a CNC tool in sight. The only unusual component is the saw blade itself, which might be a bit tricky to track down if you were so inclined to reproduce the build.
If you’re working with small parts, even the smallest table saw available at Home Depot or Lowes is generally overkill. For cutting up ... out of 1/4″ aluminum plate with a 1/15 horsepower ...