Free No account needed

Print-in-Place Pin Hinge Generator (OwlCAD)

A knuckle hinge with a captive pin that prints pre-assembled and moves straight off the plate

Print-in-Place Pin Hinge Generator (OwlCAD) is a free browser tool for adding a working hinge to a print without modeling the clearances yourself. The customizers and the editor are free; only OwlCAD's AI features need the Pro subscription. Exports STL and 3MF; no account needed. Last checked 16 October 2026.

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Opens owlcad.com

At a glance

Price: The customizers and the editor are free; only OwlCAD's AI features need the Pro subscription
Runs on: Browser
Exports: STL, 3MF
Multicolor: No, single color
Account: Not needed
Open source: No
Skill level: Beginner: fill in a form
Best for: Adding a working hinge to a print without modeling the clearances yourself
Selling prints: Allowed OwlCAD's terms include commercial use on every plan, the free tier included: you may sell prints, sell or license the files and use them in a product, with no royalty and no attribution required.
How we checked: Opened the generator Customizer opened in a browser with no account: the default flat-leaf hinge rendered in 3D with all settings; pricing and terms read
Checked by: Mike Janssen
Last checked: 16 October 2026

Open generator

Sources: Pin hinge customizer, OwlCAD pricing, OwlCAD terms (checked 16 October 2026)

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About this generator

The Pin Hinge Generator is one of the free customizers in OwlCAD, a browser-based parametric CAD tool. It makes a knuckle hinge whose two leaves interleave on a shared axis with a captive pin through every knuckle, so it prints pre-assembled and swings with nothing to snap together.

You set the leaf length, hinge length, thickness and number of knuckles, and choose flat leaves or a wall mount. The pin can be its own part, capped at each end inside a pocket, or grown into one leaf so the hinge comes out as two parts. You pick the fit and the clearance gap, whether to print it flat or on its axis, and whether to add supports. The page warns to keep the leaf at least as thick as the barrel is wide, or it hangs above the plate.

It runs in the browser with no account and costs nothing; only OwlCAD's AI features are paid. It is one of 35 free OwlCAD customizers, and you can open the result in the full editor if you want to change more. Its terms give you full commercial rights to what you make, the free plan included.