Sample · module 2 · 20° · herringbone 30°

13T : 39T · printed herringbone

The classic printable herringbone pair: self-centring, 3 : 1, spoked.

Printed drives13 : 39

Build it with your AI

Using the CheapCAD Tools connector, design a two-gear drive in Gear Designer: module 2 mm, herringbone, helix angle 30°, face width 12 mm. Gear 1: 13 teeth, an 8 mm bore. Gear 2: 39 teeth, an 8 mm bore, spokes: 6 of them, Hub OD 20 mm, Width 5 mm, Rim Depth 9 mm, Fillets 4 mm at the rim and 6 mm at the hub, Spoke Height 6 mm (a thinned web). Check the design, apply any Auto-fix it suggests, then export both gears as STL and give me the download link.

Paste it into Claude, ChatGPT or any AI app with the CheapCAD Tools connector, and it designs this gear set with you, checks it and hands you the files. How to connect your AI.

What's in this design

Gear 1 · 13 teeth

13T gear · tip Ø34 mm · bore Ø8 mm

Gear 2 · 39 teeth

39T gear · tip Ø94.1 mm · bore Ø8 mm · 6 spokes, rim 9, web 6

The mesh · module 2 · 20° · herringbone 30°

ratio 3 : 1 · centre distance 60.04 mm · contact ratio 1.31 + overlap 0.95 · backlash 0.143–0.27 mm

The link opens both parts in the Gear Designer's 3D Mode. Change the teeth, module or pitch, bore, hub or spokes, then download STL, STEP, DXF or SVG.

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