Plastic board and cutting mat: Attach or secure a cutting mat to the plastic board to create a stable surface for cutting tasks. Ruler with a cuttable thickness hole: Fix a ruler with thin holes that allow a knife to fit on the plastic board (or use a tool that acts as a slider). Left and right movement: Use a fixture that allows the ruler to move left and right so that it can be positioned as desired during work. Up and down movement using springs: Attach springs to allow the ruler to move up and down, enabling it to be raised or lowered as needed. This should make it easier to move the ruler and perform cutting tasks with a cutter knife.
