Free CNC Gear Generator | Production-Ready DXF for CNC Routers & Mills

Generate precision 2D toolpaths for CNC routers, vertical milling machines, and plasma tables. GearDXF creates continuous, mathematically verified closed polylines that CAM programs (Vectric, Fusion 360 CAM, Mastercam, Estlcam) parse instantly with optimal toolpath lead-ins and lead-outs.

Key Features

• Closed-loop polyline DXF compatible with all CAM and CNC controllers
• Calculates realistic root dedendum radii to accommodate end mill cutter diameters
• Configurable drive shaft keyways and bolt circle mounting holes
• Metric Module (0.5 to 10+) and Imperial DP gear standards
• Multi-gear layout nesting for maximum sheet material utilization
• 100% free with no registration or CAD plugins required

Frequently Asked Questions

How do I machine gear roots with a round CNC end mill?

A standard rotating end mill cannot cut an internal corner sharper than its own radius. Ensure your gear tooth root space is wider than your cutter diameter, or use profile shift to increase clearance.

Can GearDXF DXFs be used directly in Vectric Aspire or VCarve?

Yes, the exported DXFs import as clean, closed vectors ready for 2D profile toolpaths and pocketing operations without requiring vector joining.

What module is practical for CNC router milling?

For wood and aluminum routing on a CNC router, Module 2.0 or larger (or DP 12 or coarser) is generally recommended so that standard 1/8" (3.175mm) or 2mm end mills can fit between teeth.