Ok, so this XII nightmare is almost done, needs frets and some hardware. I have no idea if it will even work and if the aluminum rod can take the tension of 12 strings, I was thinking about putting a Nashville tuning on it if it doesn't which I've never seen on 12 strings before which might be pretty cool sounding.
This Spazial sort of coming along, fretboard, some routing, painting needs to be done, I'm trying to recreate the Wandre vibrato system and I'm not smart enough to figure out spring rates so I built this test rig to figure out which spring to use.
I had assumed that the spring in the vibrato was an extension spring so I tried a bunch of different ones using that but the string tension would pull all the springs I bought too far, then I found an actual picture of the guts of the vibrato:
I guessed most parts of it right except that it uses a compression spring instead of an extension. I had a bigsby spring in my parts bin and stuck it in there and it
almost works but not quite, it is still a bit too weak, I've reordered some new springs for testing that now, but I'm toying with the idea of having a compression spring on one side and an extension spring on the other, I wonder if you could make a really really awesome feeling vibrato system with a push/pull system like that setup. I'm guessing if I could have really long compression and extension springs perfectly balanced with the pull of the string tension, you could slow the oscillation when doing that Steve Vai thing of flicking the wang bar, which could give you a really slow mechanical oscillating vibrato on the guitar, but I'm guessing the springs would have to be very long to do that.
I just put those thunderbird pickups in the Spazial like how Harvester Guitars uses them a lot, pretty good off shelf visual rep of the Davoli 'bikini' pickups but I still need to learn CAD/CAM so I can build some sort of closer representation of the originals which have this cool trapezoidal shape and embossing. I'm also trying to figure out what the guts of them look like, I've read they are sort of like Fender XII pickups under a cover, I kind of want to build some Jazzmaster style pickups under a cover like that since JM pickups are my favorites. This pic seems to show 3 wires? If anyone has ever seen a pic of the guts pls tell me! There is a company in Germany that actually still produces the Bikini Davolis, but they are just stupidly priced at $400 usd
PER pickup.
I', stalled yesterday because turns out the 1/2" neck inserts I got actauly measure at 19/32" 
So I either had to get different inserts or another drill bit.. I ordered the bit. 
