Accuracy demands attention and making accurate parts, consistently, requires close attention to design for manufacturablility (DFM). The goal of the DFM process is to reduce manufacturing costs without reducing performance, and that means every detail of your product or part is on the table. Yes, we harp a lot on DFM, but it’s a critical part of the manufacturing process. We engage in DFM well before tools are cut or samples are produced. It's no wonder 80 percent of product development cost is invested in the design stage. It’s that important.
There are five key factors examined during the DFM process:
1 | Design
Your design itself must follow good manufacturing principles to achieve the form, fit or function of the product or part.
2 | Process
The manufacturing process will be reviewed to ensure it’s appropriate for that type of design. REMEMBER: The more complex the process the more variables for error. All processes have limitations and capabilities. Only include those operations that are essential to the function of the design.
3 | Material selection
The material chosen will be determined by the performance criteria of the part. For example, does it need to be hard or soft? Does it need to conduct electricity or be waterproof? The right material will allow your product to achieve the aesthetic and functional performance you’re looking for.
4 | Environmental considerations
Every component in the part or product must be able to withstand the environmental conditions it will be subjected to.
The product needs to be able to perform under every possible condition whether extreme heat or cold; power surges; extreme moisture or dry condition; pressure.
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5 | Compliance + Testing
Products must comply with standards related to safety or quality requirements.
Your product might need third-party quality testing. Make sure the contract manufacturer doing your product’s DFM has ISO-certified testing facilities. It’s helpful if they can also provide UL, ETL and other third-party testing on site.
When designing plastic injection molded parts or products, keep these DFM rules of thumb in mind:
If you're going to invest your hard-earned capital to develop a product, make sure made affordably and consistently to your quality standards. The way to ensure that's the case is to take the time to execute the best DFM possible.