This OSAT design is an economical alternative for a cam cleat. Basic cam cleat designs are utilized for many functions. They are typically used as a quick release and locking mechanism for ropes and chords. These devices are usually found on sailing vessels as a method organize and hold lines. Additionally, with few modifications of this design, one being a pulley, a mechanical ascender should be able to be printed.
Cam cleats typically use leaf springs to provide their action, however, this is a prototype using rubber bands. The loads for this prototype need not be large to confirm how the rest of the design responds to an action.
Having the option to 3D print a cam cleat at sea is attractive as it can save frustration in the event of a failure. During light to medium wind conditions, a 3D printed cam cleat should be sufficient until a replacement can be obtained.
A common issue with this design is that the rubber bands providing the action may slip off when relaxed. This can be solved two ways, either provide a lip for them to stay on or use an exceptionally tight rubber band.
Also, an improvement to this design would be a better stopping mechanism so the cam does not reverse on it self when relaxed.
Both issues can potentially be solved when using a leaf spring instead of rubber bands.