Text-to-CAD: parametric source, geometry evidence and responsible handoff
Text-to-CAD operations: geometry checks are not permission to upload or print
Keep model execution, local viewing, manufacturing assessment and physical machine actions under distinct evidence and authority boundaries.
What you will learn
- A generated Python model is executable code
- Manufacturing assessment needs process-specific evidence
- Keep digital handoff separate from machine operation
Before you start
- Basic Python functions, modules and file paths
- Understanding of units and the difference between a design and a physical part
Plan a bounded CAD exercise and distinguish source freshness, document inspection, visual review and manufacturing decisions.
Key takeaways
- Review model code before execution.
- DfAM facts need process context and explicit limits.
- Inspection and upload or printer authorization are distinct.
A generated Python model is executable code
Review a model before running it in the interpreter and use a dedicated learning directory with synthetic dimensions. A CAD-oriented filename does not prevent arbitrary Python behavior. Do not execute an untrusted model merely because its promised output is a harmless-looking block.
Launch a local viewer over the intended model workspace, not a broad directory containing private files. The directory determines what it scans and serves. Local binding is useful scope control but is not a claim that the viewer has undergone a complete security audit.
Manufacturing assessment needs process-specific evidence
The DfAM workflow measures mesh facts and compares them with cited process or material limits. Its measurement tool is described as fact-only, not a readiness verdict generator. Missing process context, suspect scale or insufficient sampling should remain unknown rather than becoming a pass.
Do not silently rescale a mesh to make its dimensions look plausible. Powder processes and supported-print processes have different constraints; the workflow explicitly identifies powder escape as an unmeasured limitation. A generic overhang result should not be applied indiscriminately to every process.
Keep digital handoff separate from machine operation
The DfAM skill explicitly does not slice, upload or start a print. The library includes separate fabrication workflows, but their presence is not authorization to use a connected machine. A printable-file review is not a strength, fit, material or engineering certification.
This series performs no slicing, uploads, printer starts or physical manufacturing. A later real project must identify exact artifacts, process requirements and responsible review before any machine action. Unknown fit-critical or safety-critical requirements should be clarified instead of filled with unverified defaults.
Decision guide
| Criterion | Option A | Option B |
|---|---|---|
| Best when | You need predictable behavior and easy auditing | You need adaptive optimization and have reliable telemetry |
| Main risk | May leave performance on the table | Can become difficult to explain or debug |
Implementation steps
- 1
Keep the practice source and viewer workspace narrow.
- 2
Verify units before interpreting process limits.
- 3
Record missing measurements as unknown.
- 4
Require separate authorization and checks for physical actions.
Copy-ready example
{
"reviewRecord": true,
"unitsConfirmed": false,
"processKnown": false,
"geometryValidated": false,
"manufacturingCertified": false,
"uploadAuthorized": false,
"printerStartAuthorized": false
}Frequently asked questions
Does DfAM Check start a print job?
Its inspected workflow explicitly excludes slicing, uploading and starting jobs.
Can a geometry pass certify strength or safety?
No. Those claims require evidence beyond these geometry and workflow checks.
Sources
- Text-to-CAD / skills/cad/SKILL.mdSource checked 2026-09-14
- Text-to-CAD / skills/cad-viewer/SKILL.mdSource checked 2026-09-14
- Text-to-CAD / skills/dfam-check/SKILL.mdSource checked 2026-09-14