GearForge generates production-ready spur gears, internal ring gears and racks right in your browser. Free SVG for everyone, precision DXF with layers for Premium workshops.
Real involute math — the same tooth geometry your CAD software expects. Not approximations, not clip-art.
External spur gears with module, teeth, pressure angle, profile shift, backlash, center bore with keyway and bolt-circle mounting holes.
Design a spur gear →Ring gears with inward-pointing involute teeth for planetary sets and gearboxes — with outer blank diameter and rim bolt holes.
Design a ring gear →Straight racks with true pressure-angle flanks and configurable backing height — for linear motion and steering builds.
Design a rack →Roller-chain sprockets with proper seating curves — chain pitch, roller diameter, bore and mounting holes included.
Design a sprocket →Straight bevel gears via the Tredgold approximation — developed tooth profile plus true cone angles and blank dimensions.
Design a bevel gear →No installs, no CAD license. If you can drag a slider, you can make a gear.
Module, teeth, bore, pressure angle — watch the live blueprint preview update as you drag.
Free SVG instantly. Premium unlocks layered DXF (OUTLINE / TEETH / HOLES) for laser, plasma, waterjet and wire EDM.
Load the DXF straight into your cutter software. Kerf compensation keeps dimensions true to size.
Every feature exists because someone cutting metal asked for it.
Mathematically exact involute tooth profiles with correct pressure angle — gears that actually mesh.
Profiles, teeth and holes land on separate DXF layers so your CAM software can assign cut operations cleanly.
Enter your cut width or wire diameter + spark gap — the profile offsets automatically so finished parts measure right.
Bolt circles, center bores and keyways are part of the profile — no post-processing in CAD.
Work in millimeters or inches; enter module or diametral pitch. The math stays metric-precise underneath.
Watch your gear spin in the preview before you commit to metal.
SVG is free forever. Premium pays for the precision features workshops depend on.
Yes — unlimited SVG downloads, no account needed, forever. Premium exists for the DXF + EDM precision features that cost us real engineering.
Laser, plasma and waterjet remove material as they cut (the kerf). Wire EDM removes wire-radius plus spark gap. GearForge offsets the profile by half your cut width so the finished part matches your drawing.
The DXF is metric (mm), R12-compatible LWPOLYLINE on named layers — it loads in LightBurn, RDWorks, Mach3, Fusion 360, AutoCAD and most CAM tools.
Yes — flanks are true involutes with correct pressure angle, and teeth narrow toward the tip exactly like standard gears. Same module + pressure angle gears mesh; add a little backlash for smooth running.
Yes. Anything you generate is yours — cut it, sell it, no attribution needed.
No signup. No install. Just sliders, a preview, and a file.
⚙ Open Gear Studio — free