Question 1

What file formats can I export gears to?

Accepted Answer

You can export your gear designs to DXF and SVG formats. DXF files work with CAD software like AutoCAD, SolidWorks, and Fusion 360. SVG files work with vector editors like Inkscape and Adobe Illustrator. Both formats are optimized for CNC machining, laser cutting, and waterjet cutting.

Question 2

Is this gear generator really free?

Accepted Answer

Yes, the gear generator is 100% free with no ads, no signup, and no hidden paywalls. All geometry is calculated locally in your browser — no cloud processing required.

Question 3

What types of gears can I design?

Accepted Answer

Currently the tool supports spur gears with involute tooth profiles. You can design individual gears or complex multi-gear sets with multiple axles. Gear parameters include number of teeth, module (or diametral pitch), pressure angle (14.5°, 20°, 25° or custom), and mounting hole diameter.

Question 4

Can I use these gears for laser cutting or CNC machining?

Accepted Answer

Absolutely. The exported DXF and SVG files produce clean, closed-loop paths that are ready for laser cutters, CNC routers, and waterjet cutters. The involute tooth profiles ensure smooth meshing and efficient power transmission in manufactured gears.

Question 5

Does this gear generator include a gear ratio calculator?

Accepted Answer

Yes. When you mesh two or more spur gears the gear generator automatically calculates the gear ratio based on the tooth counts. For example, a 40-tooth gear driving a 20-tooth gear gives a 2:1 ratio. This makes it easy to calculate spur gears for the exact speed and torque you need.

Question 6

How does this compare to GearSketch or other gear design tools?

Accepted Answer

GearDXF is a modern alternative to tools like GearSketch. Unlike older Java or Flash-based gear generators, this gear builder runs entirely in your browser with no plugins required. It offers native DXF and SVG export, real-time gear simulation, and a visual gear calculator — all completely free with no ads or signup.

Question 7

Can I simulate how my gears will mesh before exporting?

Accepted Answer

Yes. The built-in gear simulator lets you animate your gear assembly in real time. You can adjust the RPM, reverse direction, and watch all connected gears rotate together to verify correct meshing, spacing, and gear ratios before you export.

Algengar Spurningar — Free Gear Generator | GearDXF

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