If you are making a fretboard, you need to get your frets in the right position. This online 2-D fret placement calculator will help you do just that. It can accommodate more exotic fretboard designs and supports equal and just temperaments, single and multiple scale lengths, and partial and non-parallel frets (similar to the patented Novax style fretboards).  It models frets, fretlets and strings as a system of lines in a two-dimensional plane and then it calculates fret placement on each string in turn.

This is a plugin script for Google's free 3D design program Sketchup. The free version of Sketchup has limited file export options and many CAM programs will not recognise the native Sketchup (SKP) file format. This plugin allows you to export your Sketchup model as a DXF or STL files readable by most CAM and 3D printer software.

The code for this plugin is opensource - and hosted on github.