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PostPosted: Wed Apr 08, 2009 3:04 pm 
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Koa
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This topic should be interesting...I have read where you can make your own dishes using 1/4 MDF. Just cut it into a circle, screw down the center and use spacers to "dish it" to your appropriate radi. (for some reason its not a perfect 'radi' but....eees cheap...) wow7-eyes



Has anyone done dishes this way? What are you using to get a 30-40+ radi? (Does anyone have the MATH to figure out radi from a 14" rod bent in ala Kinkeads method in his book?)

I am thinking spacing with pennies or nickes at a given distance around the arc, or maybe roundhead screws screwd in to the bottom baseboard.

Havent seen this topic posted here, just on MIMF...

tanks... [:Y:] :ugeek:

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PostPosted: Wed Apr 08, 2009 3:09 pm 
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Old Growth Brazilian
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Theoretically this is just a mater of knowing the total rise of the cord. Frankly though that thin of MDF will not likely hold the arc true for long unless well sealed.


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PostPosted: Wed Apr 08, 2009 3:55 pm 
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Brazilian Rosewood
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Try this

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PostPosted: Wed Apr 08, 2009 4:15 pm 
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Koa
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Dave White wrote:
Try this


Dave, I am aware of that technique, but I need to do the rim to match also. But for giggles sake, how do you get the origional 40 degree brace to start with?
idunno

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PostPosted: Wed Apr 08, 2009 10:07 pm 
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Mahogany
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http://www.ukuleles.com/Technology/calcarc.html


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PostPosted: Thu Apr 09, 2009 7:03 am 
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Brazilian Rosewood
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I feel really sorry for the guitar makers of old. How could they possibly start making guitars without a radius dish - I mean you couldn't possibly mark the rim and use hand tools could you :shock:

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Dave White
De Faoite Stringed Instruments
". . . the one thing a machine just can't do is give you character and personalities and sometimes that comes with flaws, but it always comes with humanity" Monty Don talking about hand weaving, "Mastercrafts", Weaving, BBC March 2010


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PostPosted: Thu Apr 09, 2009 9:01 am 
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Old Growth Brazilian
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Dave White wrote:
I feel really sorry for the guitar makers of old. How could they possibly start making guitars without a radius dish - I mean you couldn't possibly mark the rim and use hand tools could you :shock:
<LOL>


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PostPosted: Thu Apr 09, 2009 11:24 am 
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Koa
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LPMc wrote:
http://www.ukuleles.com/Technology/calcarc.html


Very cool that would do it...thanks

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