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5.1.4. TRIZ Principles: Trimming

How To Invent (Almost) Anything > 5. Basic TRIZ > 5.1. TRIZ Principles > 5.1.4. TRIZ Principles: Trimming

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TRIZ invites you to trim away unnecessary devices by thinking about how some parts of the system may deliver the functions that currently other parts deliver. We tend to add a device every time we need another function. Many systems can be trimmed if we think carefully about how to deliver the functions we want.

A trimmed system not only costs less, it also has less scope for uninvited harmful functions to appear, and is thus doubly desirable.

A simple example would be an assembly where instead of screwing one part to another the shape of the parts allows them to be clipped together. Screw, glue or other fasteners have been trimmed away by changing the shape of the parts.
 

Other principles

• 5.1.1. TRIZ Principles: Function
• 5.1.2. TRIZ Principles: Harm
• 5.1.3. TRIZ Principles: Ideality
• 5.1.4. TRIZ Principles: Trimming
• 5.1.5. TRIZ Principles: Substances and Fields
• 5.1.6. TRIZ Principles: Evolution
• 5.1.7. TRIZ Principles: Contradictions

Other sections in this chapter:

• 5.1. TRIZ Principles
• 5.2. Using Contradictions and Principles
• 5.3. Simplifying TRIZ Principles
• 5.4. TRIZ Thinking

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