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PostPosted: Sat Aug 07, 2010 4:51 pm 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Sun Feb 27, 2005 10:11 am
Posts: 2221
I don't need no STINKIN' Jig!!!

But, seriously-I am in the 6 X 48 belt sander camp...

It's hard to explain (but easy to do) Basically I gently roll the fretboard on the sander and it just sort of "automatically" makes a compound radius.

It just seems the end toward the bridge gets less of a radius than than the nut end.

Of course I finish it up with a block and sandpaper checking with radius gauges and a straight edge as I takes something around 30 minutes.


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PostPosted: Sat Aug 07, 2010 7:28 pm 
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Koa
Koa

Joined: Fri Jan 25, 2008 9:55 am
Posts: 982
Location: Traverse City Michigan
Here is a drawing of my double bass fingerboard, just for the sake of discussion and to illustrate an extreme approach.

My bass fingerboards are planed by hand to get this shape which is a parabola. Fingerboards on violin family instruments usually cited to be in mm radius but in reality some luthiers will create more of a radius with flat ends, or a flatter radius on the edges and more radius in the center (parabola). This way the fingers don't feel like they are sliding off the fingerboard, yet there is sufficient bow clearance as not to hit double strings.

Take a look at the drawing and see there is a lot going on in the set up that seems simple yet creates ease of playing that can't be described easily.

I believe this is true for the guitar but in a much different way. Of course it is player specific.

Anyway, I thought this might be a little interesting, but not really specific to this topic.


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