Build thread - Blackwood & Bunya Dreadnought

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Fri Jun 12, 2015 5:30 pm

Bending a cutaway??.......do it by hand ya Pussy!!!! :)
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Fri Jun 12, 2015 5:38 pm

kiwigeo wrote:Bending a cutaway??.......do it by hand ya Pussy!!!! :)
Why waste money on a bending iron when I have the LMI bender sitting there doing nothing?

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Fri Jun 12, 2015 6:18 pm

demonx wrote:
kiwigeo wrote:Bending a cutaway??.......do it by hand ya Pussy!!!! :)
Why waste money on a bending iron when I have the LMI bender sitting there doing nothing?
There are a few things the Fox style benders cant do....and often you'll find that a side out of a fox bender will need a bit of touching up on the bending iron.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 13, 2015 7:54 am

kiwigeo wrote:
demonx wrote:
kiwigeo wrote:Bending a cutaway??.......do it by hand ya Pussy!!!! :)
There are a few things the Fox style benders cant do....and often you'll find that a side out of a fox bender will need a bit of touching up on the bending iron.
Yet to have that happen, but it makes me wonder, if it's being used properly why would it need touching up?

Not sure what version you're using, but once I started using quarter sawn as opposed to the flat sawn test pieces I was practicing on, it's been pretty idiot proof with a nice smooth bend every time.

Indian Rosewood will be the next set that gets bent (after I do some practice bends on this cutaway form, as I've already had a commission for my first acoustic order. I have told the guy I need to finish my current one first though so I have any faults ironed out beforehand.

The Bunya acoustic is sounding a LOT better than when I first string it up. Over the week the sound has changed way more than I expected. I'm thinking it's that the strings have oxidised a bit loosing their fresh tinniness, they're like this on electric too. I've ordered some Elixers to throw on it and the next one, apparently they are the way to go according to the string discussion on this forum a while back.

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Sat Jun 13, 2015 10:02 am

demonx wrote:
Yet to have that happen, but it makes me wonder, if it's being used properly why would it need touching up?
Try bending herringbone purfs for a parlour rosette on a Fox bender....like I say after a while you'll discover that there are some jobs that can only be done on a bender.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 13, 2015 12:00 pm

kiwigeo wrote: Try bending herringbone purfs for a parlour rosette on a Fox bender....like I say after a while you'll discover that there are some jobs that can only be done on a bender.
I have no desire to use Herringbone or build a Parlour, not to my tastes, so I should be pretty safe in that regard.

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 13, 2015 12:11 pm

Cut out the headstock for the Redwood dread. It's a slight redesign on the head I used for the Bunya guitar. Tapered it a bit more and knocked the top curve a bit flatter. I inlaid a Ebony logo into this one.

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Sat Jun 13, 2015 12:20 pm

demonx wrote:
I have no desire to use Herringbone or build a Parlour, not to my tastes, so I should be pretty safe in that regard.
LOL.....and you probably confidently stated a few years back that you'd never build acoustics :mrgreen:
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 13, 2015 12:44 pm

kiwigeo wrote:
demonx wrote:
LOL.....and you probably confidently stated a few years back that you'd never build acoustics :mrgreen:
Quite the opposite. It's always been my plan to build Acoustics, I just envisioned it about ten/twenty years from now, but when it fell into my lap that a well known retired acoustic luthier offered to mentor my acoustic builds and get me started using his methods and designs if I chose to use them, it leapfrogged to the now rather than the later.

For now I'm using his bracing designs/measurements and a few of his construction methods, but I'm using a standard Martin shape rather than his personal design, yet I'll be pinching his cutaway (at his suggestion), as the last one I did although it offers insane high fret access, also offers a slippery guitar which needs to be played seated in flying V fashion! I'm already using his bridge design, (again, his suggestion) as its simple, classy and I really like it. I played around with other designs but none came close to surpassing it. I will be changing the pin width on consecutive builds though as I like a narrower neck width than he builds. I'm also using more jigs and more power tools than in the methods he's been showing me as I'm trying to do it my own way that works for me, as some of the old world methods I've been shown, if I was to try that I'd make a mess, yet I can do the same job without thought using other tools I already have.

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Sat Jun 13, 2015 5:11 pm

Bottom line....I don't think you'll find many acoustic builders without a bending iron in their shop. Like I said a Fox style bender and silicon blankets is a great tool but there's just a bunch of things it cant do.
Martin

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 20, 2015 1:19 pm

Haven't really touched the acoustic build since last update as I've been flat out doing customer builds, but I did run these off on the CNC this morning.

A couple of clamping caulks for the top and back.

I made them out of 6mm MDF. Thick enough that it will spread the clamping pressure and cushion the clamp pad, but thin enough it will bend with the radius of the body. I also made them dual purpose by adding the cutaway section.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Fri Jun 26, 2015 12:07 pm

Little bit more on the Redwood dread.

Cocobolo binding with a black white black veneer pref. I'm not sure if I got more glue on my fingers or the timber while doing this!

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 27, 2015 11:38 am

Handy little trick I learned: pin the purf before trying to glue the binding.

Made a pain in the a job a walk in the park.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jun 27, 2015 2:34 pm

Routing the truss rod slot:
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Sat Jun 27, 2015 3:29 pm

It's all starting to come together....

Would be good to see some tap test results on the finished instrument.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by Nick » Mon Jun 29, 2015 6:40 am

kiwigeo wrote:Would be good to see some tap test results on the finished instrument.
Na, don't think it will quite take off, doesn't look right somehow. :wink:
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Mon Jun 29, 2015 9:36 am

Thats a hot tap..it should be on the treble side of the soundboard.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Fri Jul 10, 2015 12:28 pm

Spend a bit more time in this one today. Now that the bridge is done so I can move forward with the neck.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jul 11, 2015 2:35 pm

Had a look at the neck joint today. Will need a touch more finessing than the last build, but it's pretty good. I won't know till I install the bolts and pull it up.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jul 11, 2015 2:55 pm

It's actually a bit worse than I thought. I just installed the neck bolts and pulled it up. Looks like when I sanded back the binding I went a bit overboard. Something for me to think about next time.

Anyway, it could be worse since this is fresh off the router. A bit of attention and it should sit flush.
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Sat Jul 11, 2015 4:27 pm

Allan, probably a stupid question and something you've already addressed but have you checked the front face of the body is perfectly flat?
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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jul 11, 2015 8:42 pm

kiwigeo wrote:Allan, probably a stupid question and something you've already addressed but have you checked the front face of the body is perfectly flat?
My post above yours was just talking about that - maybe I was too subtle in saying I went overboard with sanding the binding.

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by kiwigeo » Sat Jul 11, 2015 9:15 pm

demonx wrote:
kiwigeo wrote:Allan, probably a stupid question and something you've already addressed but have you checked the front face of the body is perfectly flat?
My post above yours was just talking about that - maybe I was too subtle in saying I went overboard with sanding the binding.
Too subtle for me... :)

The gap isnt huge and I think you've got enough side thickness to sand the front of the body flat.....it'll save you alot of cursing and swearing while getting the neck fit right.
Martin

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by demonx » Sat Jul 11, 2015 9:50 pm

kiwigeo wrote:

The gap isnt huge and I think you've got enough side thickness to sand the front of the body flat.....it'll save you alot of cursing and swearing while getting the neck fit right.
About a second or two on the linisher should do the trick. I'll have a look at it next week at some stage.

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Re: Build thread - Blackwood & Bunya Dreadnought

Post by colburge » Sun Jul 12, 2015 8:16 am

Looks nice, cant wait to see it with a finish on it.

Col

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