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Any musicians/ instrument builders here?

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  #21  
Old 09-17-2012, 09:44 AM
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Looking good.

What are you doing for internal structure and bracing ?
 
  #22  
Old 09-17-2012, 10:48 AM
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Propably none other than glue a piece of plywood under the rear bridge. Don`t think it needs a "skeleton" since there`s only 4 strings. Now that you got me thinking of it it propably wouldn`t hurt to put one bar going from the bridge to the back just so it wouldn`t warp...
 
  #23  
Old 09-17-2012, 11:48 AM
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Umm...

Unless your planning on nylon strings you need to brace the top at least...IMO tho, even then on a flat top.

It also need to lined where the top and the sides are joined. Don't count on the small amount of end grain to hold it all together.
 
  #24  
Old 09-17-2012, 11:55 AM
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hmmm...Have been thinking about that... Propably should... If I don`t recall incorrectly the average pull of an electric guitar string is 9kg x4... gotta re-think it before doing anything...
 
  #25  
Old 09-17-2012, 01:09 PM
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Check D'Addarios website. They use to have string tension charts and calculators on there somewhere.

Should tell you for sure.
 
  #26  
Old 09-17-2012, 01:51 PM
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U mean This page?

Too tired to understand any of it ATM, but linked it here for further purpose...
 
  #27  
Old 09-17-2012, 02:57 PM
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I'm on my phone but yes, that looks like one of the ones I remember.
 
  #28  
Old 09-19-2012, 03:43 PM
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Was thinking bout something like this...



The inner structure looks like this:
 
  #29  
Old 09-20-2012, 09:08 PM
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Sorry I missed your update.

Umm, the bracing on the top is ok. The fan pattern is nice but I would run continous pieces from the tail to past the bridge un-broken. Your trying to counter the belly and bulge that the bridge is wanting to create in the top from string tension. The vertical pieces really arent doing much there. You may want to consider blocking to screw the PUs too maybe as well. Not sure what you have under the bridge....

"IMO".... The sides should have a scarfed edging following the full contour of the body where is meets the top and back.(In the corners 90*) Otherwise your counting on that 1/4 or less end grain to hold it all together. End grain just doesn't make a strong glue joint and it's typically doesn't take much to snap it loose. Glue up a sample and see what I mean.

You only get one chance to do that right and it is now.
 

Last edited by zaqwert6; 09-20-2012 at 09:10 PM.
  #30  
Old 09-20-2012, 09:14 PM
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These may be kinda overkill IMO but it shows the elements I mentioned.





I'm sure you can google just as easily as I. But the edge joint lining and bridge bracing is the most important IMO.
 


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