What is the trade name for an edge grinding system that produces a shelf-effect behind the bevel on thick edge lenses?

The trade name for an edge grinding system that produces a shelf-effect behind the bevel on thick edge lenses is "Hide-a-bevel." This process is designed specifically to create a smoothly finished edge that minimizes the visibility of thickness, allowing for a more aesthetically pleasing look to thicker lenses. The shelf-effect enhances the transition from the beveled edge to the main body of the lens, making it appear thinner than it actually is.

This system is particularly useful when dealing with high-index lenses or other thick materials where the edge thickness can be noticeable. The Hide-a-bevel technique not only improves the appearance of the lens but can also enhance the fitting of the lenses into frames by ensuring a snug and secure placement.

The other choices do not describe this specific edge treatment process. Lens fining typically refers to a refining process that smooths lenses rather than modifying the edge profile. Bevelmaker may refer to a general category of tools used for creating bevels but does not denote the specific technique used for achieving the shelf-effect. Edge precision implies accurate edge work but does not specify the aesthetic finish that Hide-a-bevel provides.