Direct Edit (NX)
NX's set of direct-modelling operations — Resize Body, Resize Face, Modify with Rules, Replace Face, on geometry without history.
🔗 Related Concepts
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Definition
Direct Edit operates on imported geometry (STEP, Parasolid, IGES imports without history) or on native bodies where history-based edits are inconvenient. Common operations: Resize Body, Resize Face, Modify with Rules, Replace Face, Delete Face. These edits add to the feature history as 'modify' steps that don't replay parametrically.
Why it matters
Imported geometry without history can only be edited via Direct Edit (or full re-modelling). For native geometry, Direct Edit short-circuits complex parametric edits when expediency matters.
Common pitfalls
- Heavy Direct Edit on native parts — feature history no longer represents the design.
- Direct Edit results that should have been parametric edits — lost design intent.
- Forgetting that Direct Edit doesn't propagate to downstream Synchronous features.
Siemens NX Ecosystem Context
This concept is a core structural element of the Siemens NX drafting and engineering environment developed by Siemens Digital Industries Software. Siemens' high-end CAD/CAM/CAE platform — synchronous + parametric hybrid modelling, strong CAM, and Teamcenter PLM integration.
Relevant Siemens NX FAQs
❓ What is Synchronous Technology and why does NX have it?
ST is direct-face editing on a body without disturbing parametric history. NX has it because it solves two pain points: editing imported geometry without history, and editing native parts when parametric edits would be tedious. Mixing ST with parametric is uniquely NX's capability.
❓ Can NX open SOLIDWORKS files?
❓ Can NX do BIM?
Not directly. NX is mechanical / aerospace-focused. For BIM (building information modelling), Siemens has Bentley products via partnership, but NX is not the BIM tool. For plant 3D design (process plants), NX is also not the typical choice — Comos or AVEVA / Bentley handle plant.
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🎓 Recommended Practice Lessons
Step-by-step practical exercises and certification-aligned paths chosen by our editors to master this concept:
NX WAVE Geometry Linker and Large Assemblies (Siemens Academy)
🌳 Semantic Crossroads & Navigation Pathways
Trunk-Branch-Leaf ModelExplore cross-referenced learning lanes. Connect this specific method back to macro CAD coordinate foundations, parent software environments, and sibling parameters in our shared taxonomy map.
Global Foundations
Core glossary, interactive graph, and domain-wide concept index.
Ecosystem Integration
Parent design environments and platforms implementing this method natively.
Active Context & Neighbors
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