I have been literally counting the hours waiting to finish this amazing Blackwood concert guitar. For starters, she is part of a new series, "The signed Bellucci Series", and she is also the first guitar I build using a complete new fan brace system that incorporates 4 different species of wood: Sinker redwood, Spruce, Cedar and Mahogany. The sinker Redwood is the transversal strut that shortens the trebles side to augment the power of the high registers whilst Cedar and spruce were used on the bass side to augment the power of and resonance of the bass line. I think I can affirm that she has the most powerful 6th string I have ever heard. Simply amazing. The top was reduced to less than 1 mm towards the edges and just a little over 1 mm towards the bridge area where I installed a new underbridge system (image below) that connects the bridge with each strut in the fan brace whilst directing each frequency to the right portion of the top. Add to this that I made a "focused" saddle bone (see pictures) to augment the separation of voices and allow each voice to make the top vibrate fully in its corresponding area. I participate directly in the construction of the Signed series and I 'll try to put out at least 2 every month.
The picture above shows the instance when I was gluing the main Sinker Redwood transversal strut against the Spruce top underside and under the waist strut.
This is accomplished on a concave structure and the struts are curved so as to achieve the doming of the top and by so doing, the necessary structural strenght is added to the top..
As I played this babe I looked like a kid and his new toy... I skipped lunch such was my enthusiasm while playing her. I could not believe the sound she puts out. You would never tell she is a 630 mm scale. Actually, this type of sound is seldom achieved on 660 mm scales. She stands out from the crowd big time ! She is tremendously easy to play so much so that you actually feel like you are cheating in a way.  Every time I plucked the low D in the Bach Prelude, I felt my eyes getting filled with tears. I know now that my concert instruments are entering a new era and my guitars will occupy their place in history. 

Italian Alpine Spruce is the highest growing tree on the planet. It grows at or above 1,800 meters where the oxygen is rarefied. This makes the grain much tighter resulting in a strong reverberating tone wood. This is the species Stradivarius used for his legendary violins.

I often tell my students and customers that shorter guitar scales are one of the best approaches to mastering the instrument. Passing from one scale to another requires very little time to adjust if any at all. The difference between 650 and 630 is quite dramatic. If you look at the picture above I took of 2 fingerboards I had ready for comparison, you will see that there is almost a 1 fret difference towards the 19th fret. That is a lot especially for those who have small hands and a limited stretch.
Sound wise, you have a little loss but I compensate during the construction. You will not believe the sound on this 630 mm Blackwood/Spruce.... AMAZING !!!
 

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Radiused or flat fingerboard?
The radiused fingerboard has been around the acoustic and the electric guitar since day one. The same is true for most instruments of the Stringed family of instruments (violas, violins cellos, bass). Radiusing (image above) makes barre and left hand stopping A LOT easier. The only drawback is that you will NEVER want to play a  flat fingerboard after that. If you are having your custom guitar built, I am all pro radiusing the fingerboard.  The standard fingerboard is flat.