The G8 is a template for making corner cuts in a frame comprising an octagonal base (English bevel, inverted, staircase, straight, fancy ...) as well as the corner cuts of the edges and plinths of octagonal box.
The G6 is a template for making corner cuts in a frame comprising a hexagonal base (English bevel, inverted, staircase, straight, fancy ...) as well as the corner cuts of the edges and plinths of hexagonal box.
The G5 is a template for making the corner cuts in a frame comprising a pentagonal base (English bevel, inverted, staircase, straight, fancy ...) as well as the corner cuts of the edges and bases of pentagonal box.
The G4 is a template for making corner cuts in a frame comprising a square or rectangular base (English bevel, inverted, staircase, straight, fancy ...) as well as the corner cuts of the edges and square or rectangular box bases.