Originally Posted by
peter.coombe
Correct. 20.6 inches is a short scale length for an OM and you will need quite a thick G string, and the G string will sound "thumpy" when fretted. I used a 34mm wide nut and 21 inch scale length on my OM, and 21 inch is still a bit short for an OM for best sound. It is a matter of balance between playability and sound, it is always a compromise. I was going to use 22 inch scale length, but changed my mind in favour of better playability, and accept that the G string will have some "thumpiness". You can't use a mandolin nut width for an OM, there is just not enough room for the thick strings. Longer scale lengths need thinner strings, but the strings move more so you still need a wider spacing than a mandolin or else the stings will slap against each other. 34mm nut width is about as narrow as you can go in an OM.
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