Part generators
AI spur gear generator
Short answer
To generate a spur gear from text, state the tooth count, module, pressure angle, center bore, and face width in your prompt, for example a 23 tooth module 2 mm gear at 20 degrees with a 10 mm bore. TextoCAD produces a parametric involute gear you can tune with sliders and export as STEP or STL.
Gears are a great fit for text to CAD because their geometry is defined by a handful of standard parameters. Instead of modeling involute tooth profiles by hand, you describe the gear and let the AI generate a parametric model you can tune.
Example gear prompt
Try this prompt in the editor: "Create a standard metric involute spur gear with 23 teeth, module 2 mm, 20 degree pressure angle, a 10 mm center bore, and 8 mm face width, with small root fillets and side chamfers."
Key parameters to set
Tooth count and module set the size and pitch. The pressure angle, usually 20 degrees, defines the tooth shape. The center bore sizes the shaft hole, and face width sets the thickness. Root fillets and chamfers improve strength and finish.
Refine and export
After generation, adjust any value with the sliders, for example to change the bore for a different shaft. When the gear is correct, export STEP for engineering or STL for a printed prototype. For the full workflow, see how to convert text to CAD and the AI CAD generator.
Frequently asked questions
Can AI generate a spur gear?
Yes. Describe the gear in a prompt, including tooth count, module, pressure angle, bore diameter, and face width. TextoCAD generates a parametric involute spur gear you can refine and export.
Which gear parameters should I specify?
The most important are tooth count, module, and pressure angle, which define the gear geometry. Add the center bore diameter and face width for a complete part, plus optional root fillets and chamfers.
Can I export the gear for manufacturing or printing?
Yes. Export STEP for CAD and manufacturing workflows, or STL for 3D printing a prototype gear.
Keep reading
More on part generators.
Text to CAD for 3D printing
Use text to CAD for 3D printing. Describe a part, generate an editable model, set exact dimensions, and export a printable STL file ready for your slicer.
How to convert text to CAD
Learn how to convert text to CAD in five steps. Write a clear prompt, generate an editable model, tune parameters, refine with AI, and export STEP or STL.
Generate a parametric gear from text
Describe the gear, tune the teeth and bore, and export STEP or STL.