TL;DR
A browser-based, local parametric gear generator lets users specify gear dimensions and tooth geometry and export 3D files (STL/3MF) for printing. The tool exposes common gear parameters—module, tooth count, pressure angle, backlash, profile shift, bore type and more—and shows calculated dimensions like pitch, outer and root diameters.
What happened
A web-hosted parametric gear generator is available that runs in the browser and operates locally, according to the project page. It provides form fields and sliders for core gear parameters (module, outer diameter, tooth count) and tooth geometry controls such as pressure angle, backlash, clearance and profile shift. Users can choose shaft-bore types (None, Round, Keyed with keyway, D-shaft, Hexagonal, Square), set bore diameter and face thickness, and configure helix angle for helical gears. The interface reports derived values—pitch, outer and root diameters, base diameter, tooth height and circular pitch—so designers can review dimensions before exporting. The tool offers export options for STL and 3MF and shows example export values (for instance: Outer 68 mm, Root 58 mm, Bore 8 mm, 32 teeth, module 2 mm, pressure angle 20°, pitch diameter 64 mm).
Why it matters
- Provides a quick, browser-based way to generate gear geometry without a full CAD package, speeding iteration for hobbyists and makers.
- Local operation reduces the need to upload models to external services, which can aid privacy and offline workflows.
- Built-in calculated dimensions let users verify critical measures before exporting for 3D printing.
- Multiple bore and tooth-geometry options increase the range of printable designs from simple spur gears to basic helical configurations.
Key facts
- Tool is presented as a free, local browser-based parametric gear generator.
- Core parameter ranges shown: Module 0.3–25 mm; Outer diameter 5–500 mm; Teeth count 4–200.
- Tooth-geometry controls include pressure angle (14.5°–30°), backlash (0–2 mm), clearance factor, and profile shift (–1 to 1 × module).
- Shaft bore options listed: None, Round, Keyed (with keyway), D-Shaft, Hexagonal, Square; bore diameter range shown up to 44.25 mm.
- Face thickness range presented: 1–100 mm.
- Helix angle range displayed: 0° (spur) to 45° (helical).
- Calculated outputs displayed: pitch diameter, outer and root diameters, base diameter, tooth height and circular pitch.
- Export formats provided in the interface include STL and 3MF; example export parameters are shown on-screen.
- Project is reachable at the URL: https://gears.dmtrkovalenko.dev/.
What to watch next
- Whether the tool validates generated gears for strength, interference and manufacturability: not confirmed in the source.
- Whether the project is open source or permits local installation beyond the browser page: not confirmed in the source.
- Compatibility and recommended slicer/printer settings for reliable prints from exported STL/3MF files: not confirmed in the source.
- Support for generating matched gear pairs or complete gear trains (beyond single-gear export): not confirmed in the source.
Quick glossary
- Module: A measure of gear tooth size equal to pitch diameter divided by number of teeth; used to ensure mating gears share the same tooth spacing.
- Pitch diameter: The diameter of the theoretical pitch circle where mating teeth effectively engage; used for calculating gear ratios.
- Pressure angle: The angle that defines the direction of force between meshing gear teeth; common values are 14.5°, 20°, and 30°.
- Backlash: The intentional gap between mating teeth that allows for assembly tolerance and reduces binding.
- Helix angle: The angle of tooth orientation for helical gears; 0° corresponds to spur gears with straight teeth.
Reader FAQ
Is the tool free to use?
The source headline presents it as free and local.
Can I export models for 3D printing?
Yes. The interface shows options to export STL and 3MF files.
What shaft hole types are supported?
Reported options include None, Round, Keyed (with keyway), D-Shaft, Hexagonal and Square.
Is the source code or license information available?
not confirmed in the source
Does the tool check mechanical strength or interference?
not confirmed in the source
NEO GEAR BTW Parametric Gear Generator BASIC PARAMETERS Module mm 0.3 25 Ratio of pitch diameter to teeth count Outer Diameter mm 5 500 Diameter at tooth tips Teeth Count…
Sources
- Show HN: Free and local browser tool for designing gear models for 3D printing
- FreeCAD: Your own 3D parametric modeler
- 8 free browser-based 3D modeling software for beginners
- Free CNC Software
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