# CADDelta-20K | Orla

An instruction-led parametric CAD editing collection that connects written change requests to before and after geometry and script changes.

## Why this dataset

An estimated 20,000 CAD editing tasks, sourced on request. Each task links a written instruction to before and after STEP geometry and a CadQuery script change.

Orla sources engineering data through industry partnerships. Review the sample and the full details below to see how this collection fits your AI work. Email humans@orla.so to discuss access, licensing, or the files you need.

Dataset page: https://orla.so/datasets/cad-delta-20k
Sample: https://orla.so/datasets/samples/cad-delta-20k.zip
All Orla datasets: https://orla.so/agents.md

- **Dataset ID:** cad-delta-20k
- **Schema version:** 1.0

## Source
- **Origin:** Original ground-truth CAD models from engineering projects.
- **Dataset preparation:** Editing tasks and related artifacts were created from the ground-truth models.

## Availability
- **Status:** sourced_on_request
- **Delivery model:** The full collection is sourced for each request.
- **Estimated task count:** 20000
- **Delivery window days:**
  - **Minimum:** 7
  - **Maximum:** 30

## Record structure
- **Unit of record:** One CAD edit task
- **Task fields:**
  - id
  - instruction
  - before
  - after
  - script_diff
- **Before and after fields:**
  - state
  - reference_step
  - script
- **Relationships:** Tasks link two states in a build sequence. Adjacent tasks may reuse the same state, so references to states are not counts of unique files.
- **Geometry format:** STEP
- **Editable script format:** CadQuery Python
- **Change format:** Script patch
- **Observed geometry unit:** millimeter

## Geometry validation
- **Checks observed:**
  - Solid validity
  - volume difference
  - bounding-box difference
- **Recorded measures:**
  - Solid count
  - volume tolerance
  - bounding-box tolerance
  - pass result

## Estimated full collection
- **Basis:** Estimates based on source material reviewed to date. Final counts are established during sourcing.
- **Estimated before and after state references:** 40000
- **Estimated reference step files approx:** 33000
- **Estimated runnable script states approx:** 22000
- **Estimated script patches:** 20000
- **Method:** Apply observed per-task file patterns to the estimated collection size. State references count two per task and can point to shared files.

## Sample
- **Representative of dataset:** true
- **Download url:** https://orla.so/datasets/samples/cad-delta-20k.zip

## Legal
- **Rights holder:** Orla Labs
- **Acquisition:** Orla acquired the raw data outright and on an exclusive basis.
- **Rights:** Orla owns the raw data and this dataset, and retains the rights to use and license them for AI training.

## Pricing
- **Availability:** On request
- **Contact email:** humans@orla.so