feature tree
Live feature tree
Every prompt parses into an editable tree of features and parameters, not a one-shot mesh you cannot touch.
live at cad.vayuai.ai
Type the part. Get the solid.
VayuAI CAD turns a plain-English description into a genuine B-rep solid on an OpenCascade kernel. A live feature tree, labeled dimensions, mass properties, configurations: real geometry, not a mesh guess.
prompt
a 90 mm flange, 6 M6 clearance holes on a 70 mm bolt circle
No install. The kernel runs in a free Hugging Face Space.
live parametric render · configurations regenerate
01 · The pipeline
From sentence
to solid.
Watch a prompt travel the same path it takes inside the tool.
Live trace
Prompt to part, end to end
The parser runs on the free-first LLM chain, the geometry on a real OpenCascade kernel, and the hole checks on published standards. Each stage lights up as a build passes through it.
- Promptplain english01
- Parserllm chain02
- Featurestree + params03
- Kernelopencascade b-rep04
- Checksstandards + interference05
- Partpreview + tree06
waiting for a prompt...
02 · The workspace
SolidWorks-shaped.
Browser-born.
The front end is a real modeling workspace, not a chat window.
viewport
Labeled dimensions
The viewport calls out diameters, radii, and lengths like a drawing sheet, straight off the model.
properties
Mass properties
Volume, surface area, and mass computed from the actual solid, per material.
variants
Configurations
Size variants regenerate from the same tree: change a driving dimension and everything follows.
controls
Ribbon + command palette
Keyboard-first: a command palette over a familiar ribbon and view cube, so hands stay on the keys.
holes
Standards-aware holes
Clearance fits, counterbores, and countersinks come from published tables, checked on every regenerate.
assemblies
Assemblies + interference
Multi-part models placed by joints, then every pair boolean-checked: touching is contact, overlap volume is an error.
drawings
ASME Y14.5 drawings
Orthographic views with dimensions, and a section where it helps, generated from the same solid as DXF and PNG.
production
Sheet + BOM nesting
Flat parts nest onto stock and purchased sheets with honest utilization, remnant, scrap, and cost-ranked buying, for one part or a whole BOM.
03 · Nesting
From parts
to sheets.
Nest Studio plans real cutting layouts from any parts or assembly BOM.
0.0% of the sheet in parts · 0 placed
- Validated layouts. Every plan is runtime-checked: parts inside the margins, every pair separated by kerf plus spacing.
- Honest material math. Net parts, reusable remnant, and scrap always sum to the whole sheet. A deterministic estimate, never called optimal.
- Cost-ranked purchasing. Stock on hand is used before buying; sheet sizes rank by your prices, with machine-time estimates from real contour lengths.
- DXF out. Cutting layouts export as DXF and cut-list CSV: files a laser or waterjet shop can actually run.
04 · The checks
Verification,
not vibes.
Hole geometry is checked against the tables machinists actually use.
ISO 273 clearance
Close, medium, and coarse clearance fits for metric fasteners, applied straight from the callout.
ASME counterbores
Socket-head counterbore diameters and depths pulled from the standard tables, not guessed.
Metric countersinks
90 degree countersinks sized to the screw, with recess-style checks before the part is called done.
stack: next.js on vercel · fastapi + opencascade in a hugging face docker space · parsing on the free-first llm chain
05 · Try it
Open the
workspace.
Describe a part and watch the tree build it in real geometry.
free to use · the space sleeps when idle, so the first build may take a moment