Classical Guitars: Trinity Guitars Number 70: Player Response & Bent Top

Luthier: Jim Holler
US Patent for Bent Top: #6894209 B2
Year: 2006
Top: Western Red Cedar
Back: Indian Rosewood
Sides: Indian Rosewood
Binding: Wenge with red trim
Rosette: Hand made by Holler Bacotti and Wenge woods.
Width at nut: 52mm
Scale: 650mm
Top Finish: French Polish
Sides, Back & Neck Finish: French Polish Overcoat with hand-rubbed lacquer
Tuning Machines: Gilbert
  Below are some in process photos of the guitar. You can see that the top has been split and bent to form the bent top model guitar. Pat The rosette has an inner ring of Wenge wood to match the binding. The red trim on the rosette will be matched to the body side and back trim on the binding. The top is not complete, there are braces to be added yet and the shaping of the bracing for tuning the top is not complete.  

The guitar is almost ready for finishing. The neck needs to be shaped and the final sanding and prep work competed. The tuning machines are in place for the photo. The Bent Top is now clear in the shots.

The guitar is on the form holding it in a position so that I can carve the neck. In this photo the neck is finished and so is the construction of the guitar. It is on to finishing. The top will get an old world French Polish for sound, and the back and sides a Lacquer finish for durability. I will make the bridge while waiting for finish to cure.

Now the fret board has been made along with the Bent Top Extension that is need to bridge from the top to the fret board. The neck it self was leveled, before the fret boars is glued to it, to insure that the top surface is flat and will not distort the fret board surface. There is a large hard maple block on the top of the fret board. This holds the assemble flat while the glue is curing. The guitar is left clamped for 24 hours to allow the system to come to equilibrium.

The body is constructed. The Wenge binding with red trim can be seen. The tape on the top is marking the centerline to be used in alignment of the fretboard.

Here the Bent Top Design can be seen clearly. The carbon fiber in the neck is also visible. The finger board now needs to be made and fit along with the extension to fill the space created by the bent top.

Here the Bent Top Design can be seen clearly. The carbon fiber in the neck is also visible. The finger board now needs to be made and fit along with the extension to fill the space created by the bent top.

The completed top will now be set aside to wait for the rest of the parts to be ready.

 

An early look at the bent sides, the neck and the back. The four additional braces on the back stiffen the back to allow it to act more as a reflecting plate and absorb less of the sound. This allows to back to be constructed light weight but strong.

A close up of the peghead and the inside of the top. The top is still missing several of its braces. Just a nice view of the inside of the guitar before the back is put in place. Note the spruce reinforcement on the inside of the guitar. This is for the Player Response hole to be cut later.
The rim or sides have just been glued to the neck and the top. The top support blocks have not been fit yet so this assembly is very fragile at this point. The Bent top can be seen from the inside of the guitar. The back has been completed and fit to the body of the guitar. Note that the guitar is still help fast to the work board to insure the the neck angle is held correctly. Here is the assembly of the back of the guitar to the body. This is a totally blind joint and takes a good amount of time and effort to complete well.

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