Step by step 4 steps
  1. Step 1

    Start with 4 cutters, 3 handlers

    C1C2C3C4H1H2H3
  2. Step 2

    2 slants in to open side while 3,4 mirror 2's cut deep.

    C1C2C3C4H1H2H3
  3. Step 3

    Continuation: anything is possible.

    C1C2C3C4H1H2H3
  4. Step 4
    C1C2C3C4H1H2H3