Brass Shaped Nut - Acoustic or Electric 5.8 x 9.5 x 43mm

When fitting one of these brass nuts you will normally need to adjust the dimensions slightly to get it perfectly matched to the guitar.

It’s best to do this adjusting by rubbing the nut on sandpaper on a hard surface. This will help keep the lines of the nut straight and square. It is best to use a coarse grade like 80 grit to begin with, the polish through the grades down to at least 400 grit.

Thickness
Start by sanding the thickness of the nut, take a little off until it’s a snug fit in the slot.

Width
Once the nut fits in the slot check the width compared to the fingerboard. If it’s too wide you need to sand a little off each end until it’s level with the edges of the neck.

Height
It’s important that the slots in the nut aren’t too high off the fingerboard or it will make the guitar hard to play. The bottom of slots should be just a little higher (0.2-0.4mm) than the level of the frets. This can be checked by running a metal ruler along the top of the frets and seeing where it intersects the slots.

Check the middle slots only, the outer slots will be higher and will need to be filed to height..

Slots
File each of the slots with a Nut File until it’s at the perfect height. This will be determined by the fingerboard radius and fret height.

You adjust the slots once the strings are on the guitar and use the string itself to compare the height of the nut slot to the height of the frets. Just push the string down on the 2nd fret, you should see a slight gap between the 1st fret and the string of about 0.1-0.3mm