If I've read the Bartolini website correctly, and yes, I'm aware we're talking about a different brand, their Quad Coils will do just that.
However, you need "special wiring" to make them do 1&4, which doesn't seem to be available!
I suppose if you have a four way switch then you have to remember which notch is the sound you like, especially with more than one of them. An extra off switch means than set and forget?
Though how many people are mad enough to have three of them?
What are you going to end up with, a solid body bass in the shape of your ukuleles, or a larger version of them with bowl, sound board and standard bass hardware fitted?
It's not clear in the rules, so I'm assuming that they're not allowed, but can I buy the bits to finish my bass I'm building? Namely tuners, nut and possibly pickups?
To be honest, as long as you have something to hold the strings up and adjust the intonation, then the loose end can be attached to the body with fence staples
Have a look at Crimson Guitars Nebula, the ball ends are hooked on little brass rods with a Gibson style saddle to adjust.
What it's for is to practice joinery and woodworkery. It became a box to put MDW's Christmas present in to give it a purpose.
If that annoys you then you can take your "mates" and their thread derailment back to the DoI. Get orf my thread.
Not as such, but if you have the drawing then ask your local engineering firms, the smaller ones probably, if they will run some off on the CNC mill.
You never know, one may say yes.
Or they'll do you a laser cut one out of 5mm guage plate. For a colossal price 😉
"Origin locates itself in a workspace and makes continuous real-time adjustments while the user is cutting. The result is precision — wherever you need it."
What happens if you want to make a jazz bass?
I'll get me coat.
I've seen Laura Kampf use one of these and did wonder whether it self corrects if you wobble.
It's an impressive bit of kit, and a very impressive result.