DeafElectrician

you can ofset the two scales lengths however you want. it doesnt have to be on a fret line ('the perp') but its easier to think about it that way

the ofset between the two scales will greatly affect the fan and therefore playability. for a predominantly lead instrument i put the perp around 12th fret but for a good all rounder i want it between 3rd & 9th... more towards 3rd for less angled frets near the nut. but this is a decsion that also depends on the difference between the scale lengths

draw out a few different fretboards and you will spot the difference it can make straight away

So it is basically just preference?

i have a question of my own,

i have been searching everywhere for an answer as to why perpendicular fret placement is a factor.

what difference does it actually make?

is it just preference?

if i just figured out the fret placement for say "Scale Length A" and drew a straight line to the corresponding "Scale Length B" fret placements, wouldn there be a definite perp fret already?

thanks for any help guys.