I use a chisel to get the styrene close to the board then level like you would any fretless. Get the neck as straight as possible and use a long, flat beam with sandpaper sanding along the string paths then blend the areas between the string paths with the beam.
Looking like a pretty cool project. I’m interested to see how you route for the middle pickup on the arched body.
Looking like a pretty cool project. I’m interested to see how you route for the middle pickup on the arched body.