Create designs that are explicitly simple-keep complexity intrinsic
Keep the functions of a design independent from one another
Use exact constraint when designing structures and mechanisms-never overconstrain a design
Plan the load path in parts, structures, and assemblies
Triangulate parts and structures to make them stiffer
Avoid bending stresses. Prefer tension and compression
Improve designs with self-help
Manage friction in mechanisms
Use three-dimensional solid model layouts to find the best arrangement of parts and assemblies
Invert geometry to reveal new solutions
Build prototypes of everything-but not all at once
Separate strength from stiffness-and stiffness from strength
Never overlook buckling phenomena in parts and structures
Analyze and test for trends and relationships
Identify contingency plans to minimize risks in design
Use closed sections or three-dimensional bracing for torsional rigidity
When designing springs, use a low spring rate and a high initial deflection
Minimize and localize the tolerance path in parts and assemblies
Use mechanical amplification to reduce failures
Include lead-ins in assembled designs
Design assemblies to be self-locating, self-fixturing, self-securing, self-aligning, self-adjusting
Use self-assembling symmetry to create a whole from two halves.
