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Fall away considered perfectly acceptable...?
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=50010
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Author:  meddlingfool [ Sat Dec 02, 2017 6:00 pm ]
Post subject:  Re: Fall away considered perfectly acceptable...?

Johnparchem I disagree with your diagnosis. I don't see how fallaway at the body join will impact the lower neck unless the instrument is set up incorrectly.

To OP, IMO, your neck angle is too far backset. I would accept a 1/32 plane above bridge top with frets, but not without.

Author:  Bryan Bear [ Sat Dec 02, 2017 6:03 pm ]
Post subject:  Re: Fall away considered perfectly acceptable...?

Yeah, you don’t want to make my problem yours! Much better to have too much fallaway than a ski-ramp. Mine’s a 12 fretter too, someday we should introduce them to each other. :)

Author:  Trevor Gore [ Sat Dec 02, 2017 7:17 pm ]
Post subject:  Re: Fall away considered perfectly acceptable...?

We have some conflicting information here:

sdsollod wrote:
With the pitch of the neck now giving a gap of 3.5 mm at the saddle location without the fingerboard...

sdsollod wrote:
I have adjusted the neck angle to produce a gap of 3.5mm (as necessary) at the saddle location with the unfretted fingerboard laying on top of the bolted on neck.


If the second situation is what you've got (together with your remarks about the bridge thickness etc.), I agree with Ed: you seem to have the neck quite a bit more backset than normal. Putting that into the normal range will alleviate your problem with the gap under the fretboard (is the fretboard dead flat BTW?) but it will still leave you with a gap, on the basis of the numbers given. You can then figure out the best way to deal with that when you're certain how big it's going to be.

Author:  johnparchem [ Sun Dec 03, 2017 12:33 am ]
Post subject:  Re: Fall away considered perfectly acceptable...?

meddlingfool wrote:
Johnparchem I disagree with your diagnosis. I don't see how fallaway at the body join will impact the lower neck unless the instrument is set up incorrectly. .


Maybe I misdiagnosed what would happen with 3 mm of fall away. I have had it happen to me fretting way up the neck at the 19 th fret on a guitar with too much fall away. My thought was that I pulled the string down farther than normal to fret and got pretty close to the fret at the body join and got back buzz. I pulled the frets and leveled the fret board eliminating the hump or bend at the body join and the guitar was good without the buzz,

Author:  Ken McKay [ Sun Dec 03, 2017 5:53 am ]
Post subject:  Re: Fall away considered perfectly acceptable...?

A number 4 plane will be fine. In fact sandpaper on a flat surface will work too. Even a hand saw can saw a wedge that is 3mm tapering to zero. But you will need a little "fall away", so maybe 2.5 at the end. Don't worry, you can do it with the tools you have. If you need some help just ask.




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