This model was designed and spliced together using Tinkercad. It can be printed with or without support. The models in the photos, including the Carousel by Nich Fugal, were printed using PLA on Snapmaker artisan. On fast print without support, the French cleat took 1 hour and 41 minutes and used 15.5 meters (46.3 grams) of material.
The author remixed this model.
I designed the French cleat to perfectly match the cleat of the Gridfinity Carousel. Using Tinkercad, I spliced one of the fasteners by RostaP on the cleat to accommodate a wood screw.