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Mechanical
Kerf vs Siemens NX
NX defined advanced surfacing for a generation — Kerf makes that power accessible without a six-figure licence.
54/54in Kerf today
54/54in Siemens NX (included)
0behind a paid tier
2026-05-24last reviewed
| Capability | Kerf | Siemens NX |
|---|---|---|
| Constraint sketcher (geo + dim)D1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/geom/sketch_solver.py
|
yes source ↗ |
| Pad / pocket / revolveD1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/geom/solid_features.py
|
yes source ↗ |
| Variable-radius filletD1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/geom/edge_blend.py
|
yes source ↗ |
| NURBS surfacing (blend/network/patch)D1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/geom/class_a_surfacing.py
|
yes source ↗ |
| Direct edit (push-pull)D1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/geom/direct_edit.py
|
yes source ↗ |
| Assemblies — matesD1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/assembly/mates.py
|
yes source ↗ |
| Sheet metalD1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/construction_verbs_tools.py
|
yes source ↗ |
| 2D drawings (views/dims/sections)D1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/drawings/
|
yes source ↗ |
| GD&T on drawings / MBD / PMID1 |
yes
packages/kerf-cad-core/src/kerf_cad_core/gdt/tolerances.py
|
yes source ↗ |
| FE — solid (tet/hex)D2 |
yes
packages/kerf-fem/src/kerf_fem/solid_tet.py
|
yes source ↗ |
| Modal / buckling / nonlinearD2 |
yes
packages/kerf-fem/src/kerf_fem/modal.py
|
yes source ↗ |
| AISC 360-22 steel (members)D2 |
yes
packages/kerf-structural/src/kerf_structural/aisc_member.py
|
yes source ↗ |
| Fatigue (S-N, ε-N, rainflow)D2 |
yes
packages/kerf-cad-core/src/kerf_cad_core/fatigue/life.py
|
yes source ↗ |
| Spur/helical gear rating (AGMA 2001-D04)D3 |
yes
packages/kerf-cad-core/src/kerf_cad_core/gearstrength/rating.py
|
yes source ↗ |
| Bearings — ISO 281 L10D3 |
yes
packages/kerf-cad-core/src/kerf_cad_core/bearings/select.py
|
yes source ↗ |
| Shaft (stress + critical speed)D3 |
yes
packages/kerf-cad-core/src/kerf_cad_core/shaft/calc.py
|
yes source ↗ |
| Thermo cycles (Rankine/Brayton/Otto)D4 |
yes
packages/kerf-cad-core/src/kerf_cad_core/thermocycle/cycles.py
|
yes source ↗ |
| CFDD4 |
yes
packages/kerf-cfd/src/kerf_cfd/openfoam_bridge.py
|
yes source ↗ |
| Heat exchangers (LMTD + ε-NTU + Bell-Delaware)D4 |
yes
packages/kerf-cad-core/src/kerf_cad_core/heatxfer/shell_tube_bell.py
|
yes source ↗ |
| 3D wing VLM (+ viscous + compressibility)D5 |
yes
packages/kerf-aero/src/kerf_aero/vlm_viscous.py
|
yes source ↗ |
| Orbital (Kepler, J2/J3, Hohmann)D5 |
yes
packages/kerf-aero/src/kerf_aero/orbital/kepler.py
|
yes source ↗ |
| Turbomachinery / wind-turbine BEMD5 |
yes
packages/kerf-cad-core/src/kerf_cad_core/turbo/stage.py
|
yes source ↗ |
| Naval hydrostatics + GZ stability (IMO)D5 |
yes
packages/kerf-cad-core/src/kerf_cad_core/navalarch/hydrostatics.py
|
yes source ↗ |
| Schematic capture (KiCad round-trip, ERC)D6 |
yes
src/components/SchematicView.jsx
|
yes source ↗ |
| PCB layout (tscircuit, KiCad round-trip)D6 |
yes
src/components/PCBView.jsx
|
yes source ↗ |
| SPICED6 |
yes
packages/kerf-electronics/src/kerf_electronics/spice/netlist_codegen.py
|
yes source ↗ |
| Signal integrity (Z0/crosstalk/eye/IBIS)D6 |
yes
packages/kerf-electronics/src/kerf_electronics/si/ibis_channel.py
|
yes source ↗ |
| Silicon synth (Yosys) / STA / GDS / DRC / LVS / formal / CTSD6 |
yes
packages/kerf-silicon/src/kerf_silicon/bridges/yosys_bridge.py
|
yes source ↗ |
| 3-axis CAM (profile/contour/pocket/face)D7 |
yes
src/components/CAMView.jsx
|
yes source ↗ |
| 5-axis (kinematics + posts)D7 |
yes
packages/kerf-cam/src/kerf_cam/five_axis
|
yes source ↗ |
| Adaptive / trochoidal clearingD7 |
yes
packages/kerf-cam/src/kerf_cam/adaptive.py
|
yes source ↗ |
| Moldflow / fill simD7 |
yes
packages/kerf-manufacturing/src/kerf_manufacturing/moldflow/flow_front.py
|
yes source ↗ |
| Feeds & speeds + tool-lifeD7 |
yes
packages/kerf-cad-core/src/kerf_cad_core/cuttingtool/tool_life.py
|
yes source ↗ |
| Nesting (skyline + true-shape NFP)D7 |
yes
packages/kerf-cad-core/src/kerf_cad_core/nesting/nfp.py
|
yes source ↗ |
| FDM slicing (Cura)D7 |
yes
src/components/PrintSliceView.jsx
|
yes source ↗ |
| Horizontal+vertical alignment (clothoid, SSD)D8 |
yes
packages/kerf-civil/src/kerf_civil/horizontal_alignment.py
|
yes source ↗ |
| Geotech (bearing/settlement/slope/pile/liquefaction)D8 |
yes
packages/kerf-cad-core/src/kerf_cad_core/geotech/liquefaction.py
|
yes source ↗ |
| Planar MBD (Lagrange/DAE, Baumgarte)D9 |
yes
packages/kerf-mates/src/kerf_mates/mbd/mbd_tools.py
|
yes source ↗ |
| Vibration n-DOF modal / FRFD9 |
yes
packages/kerf-cad-core/src/kerf_cad_core/vibration/mdof.py
|
yes source ↗ |
| Controls — state-space / LQR / KalmanD9 |
yes
packages/kerf-cad-core/src/kerf_cad_core/controls/statespace_tools.py
|
yes source ↗ |
| Wiring/harness (WireViz + 3D router)D10 |
yes
src/components/WiringView.jsx
|
yes source ↗ |
| AC load-flow (Ybus / Newton-Raphson)D10 |
yes
packages/kerf-cad-core/src/kerf_cad_core/elecpower/loadflow.py
|
yes source ↗ |
| PLC IEC 61131-3 (ST/Ladder/FB/motion)D10 |
yes
src/components/PLCView.jsx
|
yes source ↗ |
| GD&T data model (ASME Y14.5)D11 |
yes
packages/kerf-cad-core/src/kerf_cad_core/gdt/tolerances.py
|
yes source ↗ |
| Tolerance stackup — 1D (WC/RSS/MC)D11 |
yes
packages/kerf-cad-core/src/kerf_cad_core/tolstack/stack.py
|
yes source ↗ |
| Tolerance stackup — 3D vector loopD11 |
yes
packages/kerf-cad-core/src/kerf_cad_core/tolstack/tol3d.py
|
yes source ↗ |
| Process capability (Cpk/Ppk)D11 |
yes
packages/kerf-cad-core/src/kerf_cad_core/spc/charts.py
|
yes source ↗ |
| Acoustics (ISO 9613, RT60, weighting, mass-law TL)D12 |
yes
packages/kerf-cad-core/src/kerf_cad_core/acoustics/sound.py
|
yes source ↗ |
| Paraxial ABCD ray transferD12 |
yes
packages/kerf-optics/src/kerf_optics/ray_transfer.py
|
yes source ↗ |
| BIM (walls/slabs/framing/stairs/IFC4)D13 |
yes
packages/kerf-bim/src/kerf_bim/export_ifc/
|
yes source ↗ |
| Jewelry (41 modules)D13 |
yes
packages/kerf-cad-core/src/kerf_cad_core/jewelry/
|
yes source ↗ |
| Material selection (Ashby)D14 |
yes
packages/kerf-cad-core/src/kerf_cad_core/matsel/multi_objective.py
|
yes source ↗ |
| LCA (full ISO 14040/44 4 phases)D14 |
yes
packages/kerf-lca/src/kerf_lca/phases.py
|
yes source ↗ |
| Should-cost (6 processes, Boothroyd-Dewhurst)D14 |
yes
packages/kerf-cad-core/src/kerf_cad_core/costing/estimate.py
|
yes source ↗ |
- yes shipped
- partial works with limits
- paid tier present, but behind an add-on or meter
- no not available
Corrections welcome. These rows are read off published documentation on the date shown and go stale as products ship. If a row is wrong, open an issue — the source file is public/compare/nx.md and every claim in it carries a link.