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Custom metal stamping

Metal stamping for metal fabrication can be surprisingly complicated. Here at Cadet Steel in Denver, we wanted to share a bit about the different processes that may be used to create the parts and components you need. We can deliver on nearly anything you need, no matter the size or application. Simply give us a call to discuss your project.


When needed, blanking can be the first step in the stamping process. In blanking, large sheets or coils of metal are cut into smaller more manageable pieces. Blanking is usually used when a piece will be formed or drawn.


Piercing is used when a part needs slots, cutouts, or holes. Piercing also punches out the required shape for a piece. It is sometimes done at the same time as blanking.


In the metal stamping for metal fabrication process, drawing is another term for stamping. Drawing is used to provide the primary shape of a part. A punch pushes metal through a die. Shallow drawing is when the depth of the part is thinner than the main opening. Deep drawn parts have a greater depth.


This is done after drawing if it is needed and is somewhat self-explanatory. A ram is used to push against the metal to provide any needed bends in the piece. You cannot punch an already bent piece because it can cause the metal to be deformed and can ruin a part.

Air Bending

When air bending is done, it is generally used to achieve a V-shape in a piece. In air bending, the flat surface of a piece is bent using a punch into a die. The space between the punch and the die is bigger than the metal thickness. The result is a bend that relaxes a bit after the piece is bent. Air bending uses less pressure and less power than other bending processes.

Bottoming and Coining

For more permanent bending, bottoming, and coining are frequently used. Both processes use more pressure, anywhere from two to 30 times the pressure of air bending. The metal is forced fully into a die. The combination is what makes the bend more permanent.


Forming is typically used for pieces that require more than one bend. Forming, while very similar to bottoming, coining, and bending, will create the bends in one step.

Pinch Trimming

Often used to cut deep drawn round cups, pinch trimming is a way to cut a piece from a metal sheet. This process separates the cut pieces from the scrap metal by pinching it against a vertical, flat surface.


This type of cutting metal is generally used to create tabs or vents. A portion or section is sliced along three edges and bent at the same time, creating the opening. A secondary step is avoided in this process and scrap collection is not needed.

Now you know more about metal stamping for metal fabrication and have a small look at what we do each day. If you need parts or components manufactured, contact us here at Cadet Steel in Denver. We produce high-quality work in a timely fashion at a reasonable price. Let’s get started on your next project.

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