francis
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My main instrument is: Whatever I'm building...
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Post by francis on Jan 28, 2016 23:24:27 GMT
I'm waiting to see the top bracing - bet its really light along with the top...
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davewhite
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Post by davewhite on Jan 29, 2016 18:43:53 GMT
Rob - thanks but in fairness the TV is pretty rubbish at the moment. Francis - we'll see  It’s time to start the top bracing. The guitar will have six fan braces, the outer two of which will pass through the harmonic bar and upper transverse brace and will lock with the top of the neck extension under the fingerboard. These two fan braces are glued on first using hot hide glue:   The soundhole support – a 1.9mm thick cross grain piece of Port Orford Cedar with a 92mm diameter central hole – is then glued in using hot hide glue:  |
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francis
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My main instrument is: Whatever I'm building...
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Post by francis on Jan 29, 2016 21:19:26 GMT
Liking things so far Dave, very symmetric and an even number of braces too, will you change the 'weights' when you shape them?
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davewhite
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Post by davewhite on Jan 31, 2016 12:38:41 GMT
Francis, The brace sizes on the top at present are to facilitate the glueing process. They will be shaped down to a different size and profile when the top is "voiced". I'll attempt to explain my rationale for the bracing design when I reach this stage. The upper transverse brace is notched to accept the outer fan braces and is glued on using hot hide glue. This brace has a flat profile:  The harmonic bar is radiused to 13’ notched to accept the outer fan braces and is then glued on using hot hide glue:  |
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davewhite
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Post by davewhite on Jan 31, 2016 17:19:36 GMT
The next two fan braces are glued on:  The final two fan braces are then glued in:  That's the top braced apart from three more small braces that may be added when "voicing" the top. |
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colins
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Post by colins on Jan 31, 2016 17:40:45 GMT
That should do the job Dave. What are the fan brace dimensions 6mm x 3mm? Lower harmonic bar open?
Colin
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R the F
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My main instrument is: bandsaw
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Post by R the F on Jan 31, 2016 17:55:12 GMT
Looking very Aten-esque.
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davewhite
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Post by davewhite on Jan 31, 2016 17:57:44 GMT
Colin,
The fan braces are currently 7mm x 5mm but as I say will be shaped lower. The lower harmonic bar isn't "open" as such - the two outer fan braces are notched in more like you'd do an X brace joint rather than bridging. I'm not looking to open up the upper bout which would probably be more appropriate for a negra or classical guitar - more for a stiff structure from the soundhole upwards leaving the soundboard below there for the active "percussive" flamenco area. I still want good trebles and balance but maybe not as complicated a sound.
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colins
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Post by colins on Jan 31, 2016 19:38:10 GMT
Yes with 6 fans 7mm wide sound spot on, my guess is that they'll end up about 3-4mm high, gabled in profile, when you're done. What do you think of the 'Tree' top wood so far, it's good isn't it!!
Colin
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francis
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My main instrument is: Whatever I'm building...
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Post by francis on Feb 1, 2016 14:54:00 GMT
Great Dave. Your braces look to be converging on the heel block / 12 fret area?
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davewhite
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Post by davewhite on Feb 1, 2016 15:42:55 GMT
Colin - Yes - very promising tap tones Francis - yes, that's correct. The cross grain centre strip pieces are glued on the back using hot hide glue:  When the glue has dried the strips are rounded over on the edges and the first ladder brace glued onto the back using hot hide glue. This brace has been profiled to a 10’ radius:  The middle ladder brace is glued in:  Finally the upper bout ladder brace is glued in:  I’m going to fit a Coyote wood “porthole” soundport in the bass side upper bout. First job is to cut a 42mm diameter hole in the thicknessed Port Orford Cedar side to take the “porthole”:   A Port Orford Cedar blank fills this hole whilst the side is bent. An identical sized Coyote Wood blank was cut at the same time to form this part of the “porthole”:  The side is then bent in the Fox style bending machine:  |
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Post by andyhowell on Feb 2, 2016 8:58:30 GMT
A fascinating project Dave - I WA sonde ring when you were going to use that tree!
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davewhite
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Post by davewhite on Feb 2, 2016 15:23:31 GMT
Thanks Andy. The two parts of the Coyote wood “porthole” are glued together using hot hide glue:  The inner porthole is routed out using the circle cutting jig:    The “porthole” is then glued into the bass side hole using hot hide glue:  |
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R the F
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Posts: 1,135
My main instrument is: bandsaw
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Post by R the F on Feb 2, 2016 15:47:07 GMT
I see you've moved your port to a flat bit. Very wise.
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davewhite
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Post by davewhite on Feb 3, 2016 11:36:50 GMT
The treble side is bent in the Fox bender and the two sides trimmed and clamped in the assembled Solera:  The Port Orford Cedar neck blank is then cut to form the headstock and top fingerboard supports and a separate section cut for the bottom part of the heel:  The two pieces are glued using hot hide glue:  The channel for the central carbon fibre bar is routed:  The bar will be capped with a Port Orford cedar strip:  The bar and cap are glued in using fish glue:  The channels for the smaller outer two carbon fibre bars are routed:  These bars will also be capped with a Port Orford Cedar strips:  The bars and caps are glued in using fish glue:  |
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Jo whoever he is.
