Blender – Non-Destructive Modelling ND v2.1

ND (short for non-destructive) is a Blender add-on that provides many workflow enhancements, tools, operations, and generators tailored specifically for non-destructive 3D modelling.  This approach is useful for many modelling needs, particularly hard-surface forms, while adjusting parameters quickly without requiring manual poly-modelling. ND modelling makes extensive use of modifiers to enable this flexible workflow.