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Old 02-10-2021, 05:03 AM
FPerezRoig FPerezRoig is offline
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Join Date: Sep 2018
Location: Spain
Posts: 65
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Had the time to make some measurements, calculations, and adjustments regarding bridge position and neck angle.

Here's what I have:

A bridge height of 0.375 inch (9.5mm).
A 16 inch radius fretboard with a height of 0.25 inch (6.3mm) measured at its centreline.

Scale length: 24.9 inch
Target action at 12th fret: 1st string -> 0.08 inch (2.03mm), 6th string -> 0.1 inch (2.54mm)

Fretwire height is 0.043 inch (1.09mm).
Saddle width is 0.093 inch (2.38mm).

Given the target action and scale length i calculated the following compensation. After reading and filling the form on this site (https://www.liutaiomottola.com/formu...mpensation.htm)

1st: 0.0743 inch (1.887mm)
2nd: 0.1393 inch
3rd: 0.0791 inch
4th: 0.1097 inch
5th: 0.1329 inch
6th: 0.1757 inch (4.46mm)

Once I calculated compensation, I positioned the bridge on the guitar top, and put some tape to mark the correct position. I positioned it so the centre of the saddle slot lies at 2x the distance from nut edge to the 12th fret + the calculated compensation for the first and sixth string)

Then put a straight edge on top of the fretboard, without frets installed, and set the neck angle so that the straight edge rests on the top of the bridge just touching it.

Once I install the fretwire and strings, I expect the string tension will pull somewhat the neck, so the added pull will compensate the height of the fretwire (0.043 inch) and a straight edge on top of the frets with strings installed should (I assume) rest again on the top of the bridge.

Is this a good starting point?
Is the target action at 12th fret reasonable? I play a combination of strumming, flatpicking, and some fingerstyle. Don't play too hard.

Thank you guys!!
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