Step 9: Notes on Bridge and Nut and String Height
I prefer the strings to be quite close to the fingerboard so that its effortless to press the correct notes.
Accordingly, I cut the bridge at a height which would bring the strings close, but not too close to the fingerboard.
I say this again, the fingerboard angle is not 100% standardized, so you may compensate for any mistakes made in fingerboard angle by cutting the bridge differently. This is acceptable in an electric violin, because the sound created is less dependent on the body than in acoustic violins.
The nut is another point where I broke out in sweat. If you study another violin or look at pictures of violin nuts (there's one on the previous step), you can see that the grooves are cut so that the string just sits in it. The contact between string and groove should be very smooth (hint: use the graphite of any pencil to aid smoothness) . Ideally the nut should hold the strings very close to, but not quite touching the fingerboard.
About string spacing on the nut - leave about 3 mm space at the sides. Divide the remaining space into three and see if it comes close to 6mm. If so, go with this. Otherwise, you may reduce the space at the sides by just a little.