Back bracing

Lattice bracing for the backs were installed. African black wood back has three piece jointed structure; therefore, I insulated two joint patches. Myrtle back has a conventional two piece back. Both backs have the 5x5 lattice bracing design. Vacuum clumping is an essential tool to make a void free gluing, because the lattice brace requires even pressure for all bracing at the same time. Traditional clumping technique is not able to install lattice brace properly. Conventional ladder bracing has been using for past two hundred years. Now, we have the vacuum clumping technique that enables to use more advanced bracing technique.