Question 1

What is the purpose of the Sheet Metal Fabrication Design for Manufacturing (DFM) eBook offered by Approved Sheet Metal?

Accepted Answer

Our DFM eBook is a valuable resource containing expert tips and insights for optimizing the design of sheet metal prototypes. It helps you make the most of your sheet metal fabrication project by ensuring cost-effective and efficient production.

Question 2

What should I consider regarding uniform wall thickness in my sheet metal prototype design?

Accepted Answer

Your sheet metal prototype should have a uniform wall thickness. Our shop typically works with materials ranging from 0.010” to 0.25” thick. If your design is complex, we can assist by suggesting alternatives like cutting shapes through the material or post-machining to achieve the desired shape.

Question 3

What guidelines should I follow when incorporating notches and tabs into my sheet metal prototype design?

Accepted Answer

For notches in your design, they should be at least the material’s thickness or 0.04”, whichever is greater, and no longer than 5x the width of the material. Tabs should be at least 2x the material’s thickness or 0.126”, whichever is greater, and should also be no longer than 5x the width of the material. These guidelines ensure your prototype can withstand external tensile and flexural forces.

Question 4

How will my fabricator decide whether to use a drill press or punch press tooling for countersinks in my sheet metal prototype design?

Accepted Answer

The choice between drill press or punch press tooling for countersinks depends on your part's geometry. If your part has tight angles or features that are difficult to reach with tooling, a drill press may be required. Otherwise, punch press tooling is often the more straightforward option. We can help you determine which method is best for your specific sheet metal prototype.

Question 5

How can I access the full set of DFM tips for sheet metal prototypes mentioned in the eBook preview?

Accepted Answer

To access the complete set of DFM tips for sheet metal prototypes, you can download our Sheet Metal Fabrication Design for Manufacturing (DFM) eBook, which includes all the best practices we've gathered over the years. It's a valuable resource for optimizing your sheet metal design and fabrication process.

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