Free 3D Printed Gear Generator | DXF Profiles Optimized for 3D Printing

Design functional gears engineered for additive manufacturing. FDM 3D printers suffer from layer expansion and filament squish; GearDXF includes precise backlash adjustments (0.2mm - 0.5mm) to guarantee that printed gears spin freely right off the build plate without post-processing or binding.

Key Features

• Tailored backlash controls to counteract FDM filament expansion
• Integrated shaft bore, keyways, and mounting holes
• Structural spoke patterns to save filament and cut print time
• Clean DXF/SVG profiles for 1-click extrusion in Fusion 360, Tinkercad, or Blender
• Real-time meshing simulation before you start printing
• No signup, no limits, and completely free

Frequently Asked Questions

How much backlash should I use for 3D printed gears?

For standard FDM printers (0.4mm nozzle, 0.2mm layer height), a backlash setting of 0.25mm to 0.4mm is ideal to prevent teeth from binding due to extrusion tolerances.

What is the best filament for 3D printing functional gears?

PETG and ABS/ASA offer good strength and heat resistance. For high-wear applications, Nylon (PA) or Delrin (acetal) provide the lowest friction and longest lifespan.

How do I turn the DXF into a 3D printable STL?

Import the exported DXF into your CAD software (Fusion 360, FreeCAD, Onshape, or Tinkercad), extrude the 2D sketch to your desired gear face width, and export to STL/3MF.