Custom metal stamping is not a single process. The same press can run very different tooling, and the tooling type, whether single-station, progressive or deep draw, shapes the cost, the speed and the kind of part you can make.
Choosing the right method early avoids paying for tooling more complex than the part needs, or hitting a wall because the chosen method cannot form the geometry. This guide explains the main stamping methods and when each one fits.
Why the stamping method matters
The method sets tooling complexity, cycle speed and the geometry that is feasible. A simple flat bracket and a deep cylindrical housing need very different tooling, even on the same press. Picking the method is really picking the cost and speed profile of the whole job.
Single-station and compound stamping
In single-station stamping, one station performs one or a few operations per stroke, and the part may move between separate dies. This gives the lowest tooling cost and the most flexibility, but it is slower per part, so it suits prototypes, simple parts and lower volumes.
Compound dies are a step up: they combine several operations, such as blanking and piercing, in a single stroke, which improves accuracy and speed while keeping tooling relatively simple.
Progressive die stamping
In a progressive die, a metal strip advances through a series of stations, each adding features such as piercing, forming and bending, with the finished part cut off at the final station. Once built, it is very fast and highly repeatable.
- Best when annual volume justifies a more complex die.
- Excellent part-to-part repeatability over long runs.
- Handles complex parts with many repeated features.
- Higher upfront die cost than single-station tooling.
Deep draw stamping
Deep drawing uses a punch to draw flat sheet into a die cavity, forming seamless three-dimensional shapes such as cups, shells, cans and motor housings, often over several draw stages. It produces hollow, seamless parts that bending and welding cannot easily achieve, which is why it is a category of its own rather than a variation of flat stamping.
Transfer stamping in brief
For larger parts, transfer stamping uses mechanical fingers to move the part between stations instead of keeping it attached to a strip. Conceptually it is similar to progressive stamping, but freeing the part from the strip allows bigger or more complex geometries.
How to choose by part and volume
Start from the geometry, then layer in the volume. The geometry rules out methods that cannot form it; the volume then decides whether simpler or more productive tooling pays off.
- Simple or flat parts at low volume: single-station or compound tooling.
- Complex parts with repeated features at higher volume: progressive die.
- Hollow or seamless shells and housings: deep draw.
- Large parts with several stations: transfer stamping.
What this means for tooling cost
Complexity drives die cost. Single-station tooling is the cheapest to build, while progressive and multi-stage deep-draw tooling cost more but repay the investment through speed and consistency at volume. If you are weighing methods, the deciding question is usually whether your annual quantity is high enough to amortize the more capable die.
| Method | How it works | Best for | Tooling cost |
|---|---|---|---|
| Single-station | One operation per stroke | Prototypes, simple parts, low volume | Lowest |
| Compound die | Several operations in one stroke | Flat parts needing good accuracy | Low to medium |
| Progressive die | Strip advances through many stations | Higher-volume, complex parts | Higher |
| Deep draw | Sheet drawn into a 3D cavity over stages | Seamless cups, shells, housings | Medium to high |