Saturday, November 23, 2019

Video: Candice Mowbray plays No. 54 with and without the tornavoz installed

Guitar Building Fall 2019

Here is the inside view of my two latest guitars, #56 and #57, one a "Concierto" model and the other "Homenaje a Torres" model.

The "Concierto" is a full size guitar with 650 mm scale, laminated sides and slightly elevated fingerboard. In this case the bracing is a 5 fan open harmonic bar system. Back and sides are of a medium light density wood from East Asia called black limba. It is similar to walnut or Spanish cedar in density. The sides are laminated with Alaska yellow cedar, and the top is European spruce. On both guitars I'm gluing the top on last onto solid laminated linings.

On the "Homenaje a Torres" guitar I'm trying to follow the what I see as the Torres design and method as closely as possible. The sides are about 1 mm thick, The braces are glued in the guitar before the back. The braces are not scalloped on the ends and have a tapered profile, the top is very thin and the back is a little thicker. The soundbox is shallower and about 5/16" or 8 mm narrower. This particular guitar is made with walnut back and sides.

Thursday, July 25, 2019

Video: Candice Mowbray plays on No.54 and 55

About a week ago recorded this video of Candice Mowbray playing my two latest guitars. You can hear two guitars with very different and lovely voices. A tornavoz Torres model with deep bass and piano-like aura, and a Balsa Double-top with concert power, punch and richness.

Wednesday, July 10, 2019

Archive: Guitar No. 55, balsa doubletop classical

Prototype balsa doubletop concert guitar. Top is spruce inside, balsa middle and redcedar outside. Indian rosewood back and sides, binding, head veneer, armrest and bridge.


Archive: Guitar No. 54, Torres FE-17 Classical

Small classical guitar, based on Antonio de Torres FE-17 1864 model, but with simplicity style rosette. European spruce top, Indian rosewood back and sides, camphor burl head plate, tamarind binding and pernambuco bridge, katalox fingerboard, Golden Age restoration tuners. 633 mm scale length.

GSI video: Garrett Podgorski plays Bach on No. 48

Saturday, June 22, 2019

Guitar making Spring 2019

Here are some things I've been working on these last months.

Balsa doubletop: basically a laminated top with a pocket taken out and substituted with thin balsa sticks. The whole thing is glued up using hide glue. Very powerful sound but not nomexy or doubletoppy, rich sound, great clarity.

Laminated sides: a stiffer, more massive side is made up by gluing two 2 mm thick bent sides. Inner side in this case is redcedar.

Laminated back: a little harder to explain, but can be done if the back is a very unstable material  such as some hardwoods, also changes the way the back vibrates depending on the thicknesses of the laminations.

Brass tornavoz: a conical tube placed in the soundhole. Lowers resonance of soundbox. I'm using copper tape to close them so they can be easily removed.

Open harmonic bars: both the upper and lower harmonic bars are left open to the sides of soundhole. Very rich and colorful sound.

5 fan bracing: lighter bracing pattern. Quicker sound production.

Solid laminated linings back and top: very solid coupling of top and back membranes to the sides.

Closing the box top last: top is glued to the sides last when the structure is solid and ready to receive top...

Balsa doubletop concert guitar: 

Modified Torres FE-17 style: