Living Document Notice
Staged 2026-09-28. Living revisions and interconnected notes live in the Bosun PKM Garden.

G-Code Toolpath Generation and CNC Milling Tolerances

Translating 3D solid models into precision physical parts via CNC milling or lathe turning demands strict G-code profile management and tight tolerance definitions. Scrimshaw tracks CAM toolpaths and machining parameters alongside raw stock material specs.

Machining Invariants

  • CAM Toolpath Versioning: Machine instructions and G-code files serialize into content-addressed references for repeatable workshop runs.
  • Stock Material Specification: Exact alloy grades (e.g., 6061-T6 aluminum, Delrin, marine bronze) anchor in structured frontmatter.
  • Precision Tolerance Standards: Dimensional tolerances (e.g., ±0.025 mm) document required machine calibration thresholds.

Rigorous G-code and tolerance tracking eliminates costly shop errors during metal and plastic fabrication.


  • Directus Target: scrimshaw-blog
  • Garden Source Reference: MOC - Scrimshaw Fabrication Engine, MOC - Supercargo Inventory Engine, DRY-1001 - Property Maintenance Logs