T-Molding
Since the dawn of time, t-molding has been the edge trim of choice for arcade cabinets. It's low cost and ease of installation made it perfect for companies mass-producing cabinets that wanted a way of making the rough cabinet edges more attractive and resilient to wear and tear.
Installation
To install t-molding, you must route a 1/16" wide groove into the exposed edges of your cabinet; this is usually done with a router of some kind and a 1/16" slot-cutting bit. Some cabinet builders have mentioned that a Dremel tool can be used for this, though doing so is not recommended.
The t-moldings barbed rib anchors the trim in place and provides a snug fit. The convex-shaped underside flattens against the surface when installed, giving the molding a seamless look against the cabinet parts.