1. Wall Thickness: Why Is It Not Always the Same?

Deep drawing is a metal forming process that turns flat sheet metal into shapes such as cups, shells, and enclosures.

During forming, the material flows and stretches. As a result, wall thickness may vary in different areas of the finished part.

If the component needs to fit around another part, such as a bearing, sensor, or internal assembly, the required inside dimensions and clearances should be clearly defined in the drawing.

2. Corner Design: Why Do Rounded Edges Matter?

Take a look at a deep drawn metal cup or enclosure. You will notice that the corners are usually rounded rather than completely sharp.

These rounded areas help the material move more smoothly during forming. Corners that are too sharp may increase the risk of material thinning, wrinkles, or cracks.

The appropriate corner radius depends on the material, sheet thickness, and part design. It is best to consider these details during the drawing and tooling design stages.

3. Flange and Edge Quality: Do They Affect Assembly?

Some deep drawn parts have a flat edge or flange around the opening. This area may be used for mounting, positioning, or connecting the component to another part.

If the flange is uneven or the edge is not properly finished, it may affect how the component sits against its mating part.

Depending on the design, additional trimming may be needed to achieve the required height and edge shape.

If the flange is used for sealing or mounting, its flatness requirements should be clearly specified before production.

4. What Should You Check Before Ordering?

Before placing an order for custom deep drawn metal parts, it is helpful to confirm a few basic details:

If you do not have a complete technical drawing, a physical sample, clear photographs, and available measurements can also help start a discussion with a manufacturer.