This is a parametric nut template designed to provide equal string spacing on a six-string guitars. Adjust the parameters in the provided Fusion 360 (.f3d) file to match your guitar’s specifications.
The simplest way to use this is to make a 1:1 drawing so you can print it out and copy the nut slots to your nut.
Here's a link to the drswing - which should link the f3d design, but I've included that as well.