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2015-09-03

Bracing the top


20150724
I began to brace the top for #8.
The process is similar to the other guitars.
First I shaped the donut.
Then I set began to glue in the braces one by one.
This guitar is using Simplicio 8 fan brace so I have to make some extra go-bars on the fly.

Once the fan braces are in they look quite impressive.



Preparing the donut ring.


Now ready to glue


Gluing the donut. The centre part I use the screw clamp to save some go-bar but in the end still not enough go-bars to go around for the other side of the fan brace that I have to make some more.


All braces glued


20150728
The braces of the top are shape accordingly much like #9.
The X-section profile is triangular shape and longitudinal profile is a bit like stream beam with straight / parabolic tapering near the ends.
The end next end block tapers earlier while the other end doesn't start tapering as early.
The tools I used include:
- Rebate plane
- Small straight base plane
- Small curved base plane
- Japanese chisel

After that I shaped the donut too.
The outer parts are remove more while the sound hole part remains taller.



Removing bulk of the braces with this rebate plane.


Triangular x-section profile


Longitudinal profile


Fan braces carved. This is how the entire bracing should look like.


20150820
I glue in the closing brace and the 2 side brace.
The 2 traverse brace will come later.



Glued the side and closing brace.


Glued the side and closing brace


20150829
The side and closing braces are carved and the traverse braces are glued.



Carved the side and closing brace.


Cutting the aperture in the traverse braces


Gluing the LTB


Glued both traverse braces


Another view


20150903
I shape up the UTB and LTB and weigh the top.
Its about 190.7 quite close to #9 top.
The resonance points are quite near to #5 points too.
Note that it's heavier compare to #5 due to the heavier density of the top.



Weight of top 190.7

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