Go through the sound hole to make some final adjustments to the struts improving the balance of the flamenco guitar
Once the soundboard, the neck and sides have been crafted, the bended sides are shoved in the guitar neck slots. Next the guitar neck is glued to the soundboard in the mold or solera. After this the sides are fixed to the soundboard using little cedar kerfings blocks. Next kerfed linings are glued to sides enabling the connect the back, forming the sound box or guitar body. The back has three cross braces and one in the centre enabling to join the two pieces of a back into one. After all this is done, the fingerboard is installed and fretted. Next the bridge is being prepared and glued to the soundboard after the French polish has been applied to the top. This shellac finishing process of a real flamenco guitar takes about 4 weeks. Layer by layer, drying and hardening individually, shellac or French polish is applied by the flamenco guitar maker as a finish to woods by hand with a cotton pad in, very labor intensive, 16 up to 18 different sessions until a high gloss is achieved. French polish allows a handmade flamenco guitar to realize its greatest sound potential because it is very thin and very compatible with the acoustic properties of woods enhancing the tonality of the flamenco guitar. Once the numerous layers of French polish have dried and hardened, the nut and the bridge saddle are installed followed by polishing the frets and mounting tuning machines or pegs. Once the guitar is ready and tuned to A440Hz concert pitch, the guitar maker will have to go through the sound hole to make some final adjustments to the struts improving the balance of the flamenco guitar. Thinning the far outside bass fan in height, deepens the tone, thinning the outside treble fan will balance the bass. To get a proper balance, very little wood needs to be removed. The legendary master guitar Marcelo Barbero (1904 - 1956) used salt on his finger to make final adjustments to the balance of his guitars.