Manufacturing

Design Knowledge Series Issue #3: Why ‘DFM’ is a Bad Term

  • Posted by Dienamics
  • February 16, 2021

Author: Bryce Holliss

‘DFM’ or ‘Design for Manufacturing’ is supposedly the process of designing products that are suitable for manufacturing. It’s a skill set that you’ll find listed on nearly every product or industrial designers resume or a service offered on most design firms’ websites. 

The problem with using this term, and indeed its’ overuse, or advertising it as a service, is that all real products should be designed to be suitable for manufacturing. ‘DFM’ isn’t a service, it is an inherent requirement of a products’ design. If your product hasn’t been designed to be manufactured, it isn’t a product design at all, simply an expensive and unusable CAD file. 

Further, ‘DFM’ is generally spoken about as a stage of the product development process, that you can design a product first and then retrospectively optimise the design for manufacturing. This is an incorrect ideology; a good product designer will design your product with manufacturing in mind throughout the entire design development process – from initial concept assessment to CAD development to prototyping and through to tooling and moulding. 

Understanding How to Truly Design Manufacturable Products 

From the very start of a product designs’ life, you need to be thinking about how it is going to be made.  

For the moment, let us focus on designing injection moulded parts. At the very start of a project, when a product idea has just been conceptualized, how the product will be physically assembled and form together needs to be thought out in precise and clear detail. This isn’t just limited to the design itself, for example, thought also needs to go in to:

  • What material can be used? What are the performance properties?
  • What is the environment of use? Does this affect the material that can be used? 
  • What size moulding machine will be required? Is specialized machinery required?
  • Will all components be injection moulded or will there by other materials? How are these manufactured/sourced? 
  • Is the part going to be over moulded? 
  • How will it be assembled? Are fasteners required? How/where can these be sourced? 

Whilst your answers to the questions above may change as your idea develops, manufacturability remains continuously relevant throughout the entire product development process.

As an experienced design, tooling, and injection moulding company, we understand this. Product design isn’t solely about reading the guidelines and following the handbook. It is about having the experience to intuitively make design decisions that can ensure a products’ manufacturing. You don’t want to run the risk of using a design firm that lacks manufacturing expertise, only to find out they’ve developed an unusable CAD model and that you have to start from scratch. 

At Dienamics, we have been in the design and manufacturing industry for over 20 years, rest assured we have the experience and the intuition to bring your product dream into reality. Product design and development is at the heart of what we do. For expert advice about designing your new product and bringing your idea to life, Contact Us today!

Want more info? Head to our online Resource page and download the free White Paper “Guide to Product Design – Why ‘DFM’ is a Bad Term”, it explores the topic in more detail.