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:










Monday, March 4, 2019

Repair: 1840 Luigi Filano Romantic Guitar

Recently I restored this 1840 Luigi Filano guitar made in Naples, Italy. It is very similar to the more well known Gennaro Fabricatore instruments made in the same city. The problems were a loose back with loose and broken binding, loose back and top braces and various cracks. The guitar was not strung up so I could not gauge playability, but as I worked with the guitar I noticed it needed fretwork and a saddle. The original saddle slot had been filled and they were using a piece of wire as a saddle. The neck is very thin compared to modern classical guitars but perfectly straight after all these years thanks in part to the veneered construction. The fingerboard is flush with the top so the neck is set angled back to get correct action.


removing binding (probably not original)

Inside when I just opened the box. I removed some previous reinforcements.

Top braces that were loose on the ends.

Glue that had to be cleaned off the back to glue back braces on again.

Clean back

Cleaning the back braces

Gluing the ends of braces

Repairing lining

Crack that had to be filled

Reinforcements and bridge plate crack repair

The finished top

Neck set before regluing back

Regluing the back

Fitting new binding

Gluing new binding

New binding

The finished guitar






Tuesday, January 22, 2019

Archive: Guitar No. 53, Flamenco

Flamenco guitar made with European spruce top, Mediterranean cypress back and sides, Spanish cedar neck, Indian rosewood binding and Brazilian rosewood head veneer and bridge. Amber shellac finish. 







Archive: Guitar No. 52, Flamenco

Flamenco guitar made with European spruce top, Mediterranean cypress back and sides, Spanish cedar neck, Indian rosewood binding and Brazilian rosewood head veneer and bridge. Amber shellac finish.