Replies to This Discussion

Permalink Reply by darryl kernaghan on February 4, 2017 at 12:05pm

Andre, the scale length when using a bolt will start from the centre,[the last contact point of the string] 

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Permalink Reply by Andre barszcz on February 4, 2017 at 12:09pm

Thanks

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Permalink Reply by the anonymous pick on February 4, 2017 at 12:07pm

center of  nut bolt  . to center of bridge  bolt  .  and the 12th fret should end up  at  half  that measurement .

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Permalink Reply by Andre barszcz on February 4, 2017 at 12:09pm

Thanks for the help

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Permalink Reply by Taffy Evans on February 4, 2017 at 12:12pm

Yep, and from the centre of any fret. Don't forget to add the required amount of compensation at the bridge/saddle, to allow for correct intonation due to string height and diameter differences.
Cheers Taff

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Permalink Reply by Andre barszcz on February 4, 2017 at 12:27pm

What amount do you allow for compensation at the bridge

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Permalink Reply by darryl kernaghan on February 4, 2017 at 1:07pm

That will vary quite a bit depending on scale length/ string gauge/ height of action etc, with a bolt as a bridge, you really only have string length compensation easy to effect, and will probably end up being a little bit of compromise by intonating top and bottom strings, and those in between being very close but not perfect, there are many posts re intonation, some very basic, and some quite complex, for a 1st build, i'd go simple and tune the top,[thinnest] string so you get the desired note at open and 1 octave higher at the 12th fret, this should be with the scale length double the distance from nut to fret 12, then doing the same with your bottom, [thickest] string, which will most likely mean angling the bridge toward the tail a little for that string, any in between strings should be very close, but maybe not perfect

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Permalink Reply by Andre barszcz on February 4, 2017 at 8:02pm

Thanks for the advice will have a go

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Permalink Reply by Taffy Evans on February 4, 2017 at 8:05pm

Hi again, if the fretted note at the 12 fret is higher than the harmonic note at the 12th, then move the saddle back, this will lower the strings pitch. Tune up the string to pitch and repeat the test until harmonic is same as fretted note. String notes too low move saddle forwards.
Cheers Taff

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Permalink Reply by Andre barszcz on February 4, 2017 at 8:08pm

Ok Will do that thanks again

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Permalink Reply by Derek Rose on February 5, 2017 at 5:32am

For example / reference, using acoustic light gauge strings tuned DGBE on 24 3/4" scale, I generally compensate approximately 1/8" (longer, toward tailpiece) on the bass D string and half that for the treble E. Using a tuner and repositioning the bridge as needed, of course gets you dialed in really good for your specific set-up.

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Permalink Reply by Andre barszcz on February 5, 2017 at 7:12am

Hi as it's my first time building one i am going to just make a slide guitar with a 25in scale

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