I take a big piece of paper and make a drawing at a scale of 1:1. I choose a string length of 685 mm that will result in more overtones in the sound. I want to have 27 frets, that’s why the neck is longer than normal.

Why 27? Simply because it is 3^3, and it looks nice :)

I don't include all the calculations, because it is a simple math, and you should be able to calculate all the dimensions for guitar with any number of strings, just remember:

- leave 4 mm between the string and the edge on both sides of the neck.

- choose different spacings between strings on the bridge and the neck end (10 mm and 7 mm in my case). Materials:

- any hardwood from the trash. Here it is an oak, beech and birch.

- fingerboard - wenge.

- some noname pickups.

- noname bridge and head-machines.

Instruments:

- drill.

- little carpenter’s plain.

- a lot of sandpaper :)

- chisel 6 mm

- clamps and bricks

- small hummer