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Finger Board Radius Question
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Author:  LarryH [ Fri Jan 26, 2007 5:31 pm ]
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I've got a blood wood fretboard from LMI and they wouldn't radius the blood wood (tear-out I believe). I see a lot of radius options but really don't want anything too trick or extreme, no compounds.

I see StewMac has a few different radii choices from 7" - 20". Should I just pick something in between or should I use another method? Won't build a jig this time around but any other options would be greatly appreciated.

Also wondered about final thickness?

Thanks very much

Larry

Author:  Colin S [ Fri Jan 26, 2007 8:52 pm ]
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I think the default radius, unless you have a special preference is 16".

Among the many great jigs that Sylvan has devised is one specially for crowning the fretboard, it's up in the Jigs & tools section (always worth browsing around). Here's the link, Fretboard crowning.

Colin

Author:  Anthony Z [ Sat Jan 27, 2007 12:11 am ]
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Also wondered about final thickness?

Larry -- I shoot for 1/4" at the highest point.

Author:  crazymanmichael [ Sat Jan 27, 2007 12:25 am ]
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if you like the feel of martins or taylors go for 16". if you prefer the feel of gibsons they are mostly 12". if you're not sure go try a few out at your local dealer to compare the feel of each.

it is a bit of work but a sanding caul from stew mac or similar will do the radiusing job for you. draw index lines on each side and down the length of the board including the centerline so you can compare progress and keep the board even. some coarse paper to get it started and take the edges down quickly and finer to finish off. the 1/4" thickness is common.

Author:  LarryH [ Sat Jan 27, 2007 12:49 am ]
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Thanks you guys - Martin's seem fine to me so 16" it is. And though I do not have a thickness sander Sylvan's jig for holding the fret board in place looks pretty cool.

Author:  npalen [ Sat Jan 27, 2007 2:22 am ]
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Not sure what this information is worth but I see that the difference in height between a 12" and 16" radius at the edge of a 2" fretboard width is .0105" or about 3 hairs.
Nelson

Author:  James W B [ Sat Jan 27, 2007 11:01 am ]
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I`d do like crazy said.Play a few and see what feels right.Or if you have a guitar that you play now that feels comfy you can check the radius on that.Stew Mac sells some gauges for a fair price that I use.I personally like a 12" radius because I have small hands and it seems an easier reach for me.
        James W B

Author:  LarryH [ Sat Jan 27, 2007 11:25 am ]
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[QUOTE=James W B] I`d do like crazy said.Play a few and see what feels right.Or if you have a guitar that you play now that feels comfy you can check the radius on that.Stew Mac sells some gauges for a fair price that I use.I personally like a 12" radius because I have small hands and it seems an easier reach for me.
        James W B[/QUOTE]

James I've got a Martin and 2 Martin kits and they seem fine. If they are 16" then I'm good to go.

Larry

Author:  James W B [ Sat Jan 27, 2007 11:42 am ]
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Your in there then dude ,cause that what martin uses.
                    James W B

Author:  CarltonM [ Sun Jan 28, 2007 12:43 pm ]
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[QUOTE=npalen] Not sure what this information is worth but I see that the difference in height between a 12" and 16" radius at the edge of a 2" fretboard width is .0105" or about 3 hairs.
Nelson
[/QUOTE]
It's one of those "a little bit makes a big difference" things in lutherie, isn't it? Those "three hairs" make the neck feel quite different in my experience. Strange voodoo.

Author:  Serge Poirier [ Sun Jan 28, 2007 2:17 pm ]
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I shoot for 1/4" here too, compound 12" and 16", i experienced a tiny hair of height difference on no 2 and no 3 also but not as much though.

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