What Compound Die means
A compound die performs multiple cutting operations in one stroke at one station: the blank is cut and its holes pierced simultaneously, with every feature positioned by the tool rather than by strip progression. The part leaves the die complete, with hole-to-edge relationships held by the tool — which is the whole point.
Why it matters on the shop floor
That single-station accuracy is why compound tooling exists: when hole-to-blank concentricity matters more than throughput, compounding the operations removes strip advancement error from the equation entirely. The trade-offs are a more complex die, a lower cycle rate than progressive, and parts that stay flat and small — compound dies rarely form, they cut.
What to remember
- Best for: flat parts where hole-to-blank accuracy is the critical relationship.
- One stroke = one complete part; no strip progression error between features.
- Forms almost nothing — compound is a cutting die. Forming goes to progressive or transfer.