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  • It reminds me of the "stick" in the 60 there was this australian Pop groep i believe called CAJACogoe or something  and there lead guitarist played it, in the same techniek as this instrument must be a evolvement ,306686555?profile=original

    Its made by a guy cald CHAPMAN he is the inventor i believe

    • That's cool Andries. It probably sounds nice too, I love all those early analog synths from back in the day.

  • If you guys are bored with CBG's, and are looking for a challenge....here ya go LOL

    306688496?profile=original

    • The real fun would be tuning that thing. LOL

  • I'm also noticing that all the frets seem to have the same spacing between them and each string has the same scale length.

    Bass scale is 30" to 36" for electric bass, Baritone Guitar scale is 27" to 29.5" for electric guitar and regular Guitar scale is 24.5" to 26.5".

    To build a passive stringed version would need a fanned fret design and the 3 scales would need to be a close medium choice. Like 30" - 28" - 26". Or do 3 separate stepped fret design.

    I'd probably do 3 separate columns since the bridges would probably be separate(1 adjustable bass bridge and 2 adjustable guitar bridges) and separate nuts. I could ground the 3 rod piezo's to each group of frets and switch between piezo and pickup or both. Not a fan of fanned frets anyway. ;)

    • This definitely won't work the same way, but it will be interesting. You could use it as a finger tapping instrument, Lap Steel Slide or Lap Style Strummer which will get even more interesting with the before mentioned effects.

  • hmm, glue up 2 or 3 2x4's to make the body,  ground the frets on bus 1, metal nut grounded on bus 2, footswitch to select between them so it acts like a sustain pedal for a piano/keyboard, each string has its own pickup with the ground side routing through the string to the fret or nut to the select switch to the jack's ground lug.

    fascinating

  • Rose asked my opinion about building one of these a few weeks ago. After doing some research my opinion is that it's not for your average CBG builder. Certainly out of my league anyway. 

    It looks cool but, after skimming through the patent, seems like it would be very hard to make. It has a several signal processing circuits (like an electronic keyboard).

    http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITO...

    • I was thinking about using a few rail pole pickups wired in parallel so you get the hum cancelling benefit while getting single coil clarity.

      Was thinking of using a 6 string guitar set, 6 string Fender bass VI string set and a 4 string bass set for 16 total strings. So 3 rail Strat type pickups should work.

      Won't be making it soon, I have too many other projects to finish.

      • I think you could make a similar tapping instrument.

        But notice the clarity of the harpejji?

        https://youtu.be/uuDwRdqSoHs

        You only hear the note as long as it is fretted and you do not hear the sound of the open string when the note is released (like when you hammer on/pull off).

        You'd probably want an individual pickup for each string. Individual piezo saddles would work well for this.

        http://www.stewmac.com/Pickups_and_Electronics/Pickups/Electric_Gui...

        I think you would wire each pickup's ground to it's string and each fret to ground so that when a string is pressed to a fret the circuit is closed and it makes sound and when the string isn't fretted the circuit is open so the string is silent.

        You'd probably also want to use a multi-effects pedal with heavy use of compression/sustainer effects.

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