The Electric Gourd (which I formerly referred to as my "gourdtar") is a lap steel fretless chromatic dulcimer that I built from a really big gourd I found in the early 1990s at NC Farmer's Market in Raleigh, NC. I've refitted the instrument several times through the years — for instance, it originall had a piezo soundboard pickup and now has a humbucker. You can hear it utilized extensively on my recordings, which are available in all the usual formats (iTunes, Spotify, Amazon, Google Play and CDr).
Much of this music is available on the various cds / mp3 / streaming service albums.
Lesson Learned: Measuring Fret Markings
Fret markings make playing a fretless, raised-string instruments MUCH easier to learn, by the way, without, of course, affecting the sound of the instrument. It's common for lap steel guitars to use actual frets as markers; in my case, I actually made marks on the instrument (yes, I did it with a Sharpie!).
For a twelve-tone equal temperament (this is the kind of tuning that is used in Western music, by and large), it works like this...
- the distance between the nut and the fret 1 = distance from nut to bridge
(1/17.835 * distance from nut to bridge)
- the distance between fret 1 and fret 2 = distance from fret 1 to bridge
(1/17.835 * distance from fret 1 to bridge)
- and so forth...
The measure/mark technique is sometimes described as employing the "rule of 18," since using a rounded-off value of 18 in place of 17.835 yields pretty decent results and builds in some correction for string height on fretted instruments. Some luthiers use the figure 17.817 instead.