Noctua Drops Public CAD Files for Its Fans, but Quietly Tweaked the Blade Geometry to Block 3D-Printed Clones

Noctua released public CAD models for its fans for engineering and design reference.

The files are accurate for mounting points and exterior dimensions, but the internal blade geometry has been altered.

Noctua says the models are not meant for functional 3D printing or direct fan cloning.

The release helps PC builders design around Noctua fans while protecting the company’s performance IP.