# CNC Gantry Linear Rack & Pinion Travel & CAD Generator

Size gantry rack-and-pinion drives for 4x8 CNC routers and plasma tables with exact steps-per-mm, linear speed, and downloadable .DXF/.STL.

## Engineering Geometry & Export Specification
- Calculates exact 94.248mm/rev linear pitch travel for Mach4, LinuxCNC, and GRBL stepper calibration.
- CAD Outputs: 0.005mm AutoCAD R12 `.DXF`, `.SVG`, Watertight 3D Binary `.STL` (4–40mm face + hub boss + bore), and `1:1` Printable `.PDF`.
- Pricing: Free Spec Proof PDF ($0) · Single CAD Pack ($11.90) · Mechanical Engineer Pro ($19.00/mo).
- Live Interactive Workbench: https://gearcadpro.com/templates/cnc-router-linear-rack-pinion-drive-cad.html