Carbon Latticed and X-bracing

I created a new bracing pattern for my Jazz Nylon model. I want to increase more over tones. To make more over tones, I introduced ax X-bracing technique. I want to make more structurally strong in the upper bout section. Lattice bracing top does not have enough mechanical support for the top against the strings pull. Therefore, Greg Small-man type guitars have been using a massive play-wood based flame for the top as shown in the first photo. The massive flame makes super strong top. This flame also is able to support the super thin latticed top. As a result, this guitar design makes super laud sound with full over tones. I do not want to increase guitar weight. Therefore, I introduced the X-bracing technique. X-bracing has been using for the Nylon strings guitars for many builders. Martin guitar is the most famous builder. However, Martin's Nylon strings guitars have not been successful as the steel-string guitars. Martin has been using almost identical X-bracing pattern designed for steel strings guitars. Therefore, the Martin's X-bracing pattern is simply over built.

Paulino Bernabe has been using the X-bracing pattern. His guitar has exceptionally good tonal quality. A photo shown below is the Bernabe guitar, and you may see that the guitar has the X-bracing pattern. His X-bracing has quite wide angle to make the optimum resonance modes for Nylon strings guitars.

I borrowed Bernabe's X-bracing ides for Nylon strings guitars. However, my X-bracing design has more steel strings influences, because I have been making X-bracing for my steel strings guitars. My X-bracing has almost triangle cross section to make the strongest possible structure with the lightest possible weight. Also, my design has the sound hole supporting bars. Those bars contributes to increase the robustness in the upper bout. I also will install two carbon rods shown in below to improve the structural robustness.

Following photos are my new bracing pattern. I installed the 8x8 balsa lattice, and then I did the Epoxy Carbon vacuum laminate. This lattice construction is pretty much the same as the Small-man design.

 X-bracing materials were cut from Adirondack spruce logs. I have been using the Adirondack spruce for my brace making for my all guitars. Adirondack is one of the strongest material among spruce species available for guitar making.

 Those photos are completed top for the next Jazz nylon built. I am very excited about using this top. Top wood is the Lutz spruce that is a hybrid between Sitka spruce and Engelmann spruce.