For an under-the-glass fin system, a dam is needed to raise the grub screws above the level of the bottom glass layer. When the board is sanded, this dam is exposed, allowing the screws to be accessed. Most fin systems have flat dams with steep sides, making the lamination process tricky. They also have protrusions in the dam outline to host the screws, further complicating the process.
We took a radically different approach with GB24. The dam is not only elliptical but is, in fact, a cylindrical ellipse (think cucumber). Making it effortless to laminate over the box as the cloth can easily drape over the dam as there are no flat surfaces. There is nowhere for air to be trapped. The laminator is spared the effort of chasing air at the dam's base. Additionally, the grub screws are placed on the dam's side and therefore do not require any protrusions.
There is nothing but smooth curves to laminate over with this dam design. Once the dam is sanded down, it leaves a clean, elliptical outline behind. This means it is a lot easier to laminate over the box with color as there is nowhere for the resin to pool, affecting the color consistency. This shape also results in the cloth being left partially on the dam, making for a much tighter installation. The flange grooves also extend partially onto the dam to allow for a mechanical bond all the way around.
