Designers having prototypes made for their clients to view and hold has become a normal part of the designing process. Physical models are much easier to explain and understand than a drawing. Prototypes have become invaluable in making design changes in order to save both time and money in the manufacturing and assembly processes.

Most products and parts that are being prototyped today are being done on a 3D printer. This is due to the fact that prototyping on a 3D printer is usually quicker and cheaper than a CNC tooling machine or with injection molding. It is also true that these parts will be manufactured by one of these processes.

But it is also prudent that products manufactured with sheet metal fabrication also use sheet metal prototyping. Is the product the right size? Are all of the angles correct? Do the holes line up with anchor points? Will the product accomplish its intended purpose? Holding a physical product in your hand and trying it for its intended use will assure you of its design. That is shrewder than discovering a design flaw after manufacturing.

Sheet Metal Materials for Prototyping

Various metals are available for prototyping sheet metal products, and in various grades. You may want to choose a cheaper metal for your prototype than the one that will be used for production. Stock metals include:

Remember that sheet metal parts are normally made from a single piece of sheet metal. Therefore, the part must maintain a uniform wall thickness. Having two thicknesses welded together will add to the overall costs.

Also, when choosing a metal for the final production run, think about the environment the part will be subjected too. You also will want to consider mechanical properties and the cosmetic appearance you desire.

Tolerances Held for Sheet Metal Fabrication

Tolerances held on sheet metal fabrication are dependent on the feature effected, such as holes, bends, and offsets.

The above tolerances are for some basic part features. You can get a more complete tolerance list from your manufacturer for the complexity of your part.

Because of the angles and bends and the tolerances you have to work within, it is a wise decision to have a prototype made and verify its usability.

Surface Finishes for Sheet Metal Fabrication

If cosmetics are important for your project, then the finish would be of concern to you. A prototype will give you the best indication of how the finished product will look. A variety of colors are available using a powder coat painting process.

Online rapid prototyping services in online manufacturing platforms provide the easiest and most comprehensive avenue to have your prototype produced. With extended capabilities and resources, you can have your prototype made quickly, with the manufacturing process you desire, and at a competitive price.

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