Design for manufacturing
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We understand that design for manufacturing is essential to ensure that products can be produced efficiently, to high quality standards and at optimised costs. Through our design for manufacturability approach, we adapt and optimise each part so that production is cost-effective and efficient, ensuring that every component is ready for assembly and mass production.
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What is Design for Manufacturing in product development?
What is it?
Design for Manufacturing (DFM) is a methodology that optimises products so they can be manufactured efficiently, quickly and at the lowest possible cost. At INFINITIA, we apply design optimisation strategies for production that reduce the time and resources required during the manufacturing phase.
An approach to design that not only improves product manufacturability, but also reduces the risk of production failures, enabling faster and more cost-effective launches. Want to know more? These are the main objectives of Design for Manufacturing.
Design for Manufacturing objectives
- Minimise costs. We optimise the use of materials as well as production processes.
- Reduce assembly complexity. This helps us to simplify mass production.
- Ensure the quality of the final product. How do we achieve this? Through a robust, well-structured design.
- Avoid rework and waste. Right from the initial design phase.
- Maximise manufacturing efficiency. We use parts compatible with modern production processes.
Benefits of Design for Manufacturing in component industrialisation
Benefits
Design for Manufacturing reduces the unit cost of a component by addressing the cost drivers that have the greatest impact on production and optimising manufacturing costs. Geometric simplification reduces machine cycle time, uniform wall thickness shortens cooling time in injection moulding, and eliminating secondary operations removes entire stages from the manufacturing route. These decisions are made while changes still cost engineering hours rather than the manufacture of a new mould.
DFM reduces the risk of dimensional rejection in mass production. Most dimensional non-conformities do not arise from an uncontrolled process, but from a tolerance specified beyond the actual capability of the selected process. A tolerance stack-up analysis identifies which dimensions are functionally critical, which can be relaxed, and where the datum should be repositioned so that the assembly can be built repeatably. The result is a specification consistent with what the machine can maintain reliably.
Design for Assembly reduces the number of assembly operations and, with it, the probability of human error. Fewer parts mean fewer references to source, fewer different fasteners, less assembly tooling and fewer opportunities for misalignment. Integrating functions into a single part and incorporating self-locating geometries eliminate alignment stages that translate into time and variability on the production line.
DFM shortens the interval between functional validation and stable production, optimising the design process. When process constraints are incorporated from the CAD model onwards, the transition to mass production ceases to be a correction phase and becomes a confirmation phase. Combining manufacturability analysis with prototyping makes it possible to physically verify design assumptions before committing investment to tooling, reducing the late-stage iterations that account for most of the additional cost in industrial development.
Design for Manufacturing applications for component optimisation
types
Design for Manufacturing applies across every production process because every manufacturing technology imposes geometric constraints that the design must take into account. What changes between plastic injection moulding, subtractive machining and additive manufacturing is not the existence of these rules, but their nature: wall thickness and demoulding in one case, tool accessibility and fixturing in another, and layer orientation and supports in the third. Identifying the dominant rule for each component is the first step in the analysis.
INFINITIA approaches these applications based on the specific characteristics of the process rather than a generic list of best practices. Before proposing a geometric modification, the specialist team determines which process is technically and economically viable for the expected volume, which material is appropriate for it, and which functional requirements cannot be compromised. This framing, closely related to technical feasibility analysis, prevents a part from being optimised for a process that should never have been selected.
- Design for Manufacturing in injection moulding
- Design for Manufacturing in CNC machining
- Design for additive manufacturing and functional validation
- Design for Assembly (DFA): reducing parts and assembly operations
- Tolerance and tolerance stack-up management
- Redesign of industrial parts and component optimisation for manufacturing
Sectors where Design for Manufacturing helps ensure production feasibility
Sectors
Design for Manufacturing is critical in every sector where a component must be produced repeatably under strict functional requirements, regardless of production volume. What varies between industries is not the need for manufacturability, but the factor that governs it: in high-volume production, cycle time and process capability dominate; in short, high-value runs, traceability and the absence of rework; and in regulated sectors, the ability to document and demonstrate every design decision.
INFINITIA adapts DFM analysis to the logic of each sector. An automotive component requires demonstrated process capability across millions of units under the IATF 16949 framework; an aerospace part uses difficult-to-machine materials and must meet AS9100 traceability requirements; and a medical device operates under ISO 13485, with biocompatibility and sterilisation requirements that constrain materials and finishes. The external technical partner adapts the manufacturability criteria to these conditions rather than to a generic standard, because the same geometry may be acceptable in one sector and unacceptable in another.
Design for Manufacturing at INFINITIA to ensure the transition from prototype to mass production
Value
Design for Manufacturing translates the functional requirements of a component into a geometric, material and dimensional definition that a real industrial process can maintain repeatably. It is not a formal review or an administrative stage of the project: it is the technical decision that determines unit cost, rejection rate and product reliability throughout its entire manufacturing life. A design that has been functionally validated but not validated against its process is an incomplete design.
The impact on industrial decision-making is direct and can be anticipated. Knowing in advance which tolerance the process can maintain, which wall thickness determines cycle time, or which joint governs the assembly sequence makes it possible to commit to tooling investment on a technical basis rather than an expectation. This preventive approach, supported by material data, simulation and testing, is what separates a project that enters production in a controlled manner from one that is corrected on the line. When the component is already in production and the problem is recurring, the same criteria are applied to process improvement, identifying whether the root cause lies in the process or in the definition of the part.
Economic optimisation does not come from reducing component quality, but from eliminating what adds no function: unnecessarily tight tolerances, avoidable machining operations, redundant fasteners and excess material thickness with no structural justification. Each of these removals is supported by verifiable technical analysis. Product improvement through DFM acts simultaneously on direct cost, rejection rate and the dimensional stability of the assembly, three factors that are linked in production but are rarely addressed together.
In regulated sectors (automotive under IATF 16949, aerospace under AS9100, and medical devices under ISO 13485), every design decision must be technically justified and documented. INFINITIA works as a strategic technical partner in this field, providing the materials and process engineering expertise that supports the specification and makes it defensible to production, procurement and the certification body. The resulting component is manufacturable because this has been demonstrated.
