Hey, since you guys mentioned my buddy and fellow tattoo artist Ryan and his building methods, here's another trick you can try out if you wanna go with a tattoo machine-inspired flavor.
Tattoo machines utilize two binding posts to isolate the frame against the machine coils. These can be any conductive metal, but the real die-hards use iron or copper. The front binding post has three holes, one to attach to the machine's frame(with insulators between them), one with a threaded hole passing through perpendicular to the binding post's body for the contact screw which goes up against the front spring, and finally, a third hole, also threaded, which uses a screw or nylon part to press against the contact screw keeping it locked in place.
If you're using a turret board, I've thought several times about building one using binding posts. You simply take them and mount them to your board however you want, probably with a flathead screw underneath for a minimized profile, and pass your components through the hole used for the contact screw. You can either solder them in, or you can use the same method us tattooers do and simply thread in a screw and lock down your components.
The advantage of this should be immediately obvious: You are free to remove any component you like with a twist of a thumbscrew. Contact with your leads and the binding post will be as strong as you want to make it, but contact is contact, and its worked for us for well over 10 years.
I would feel just fine about seeing this kind of thing used in a commercial build, but if anyone felt iffy about it, at the very least, it would make for one hell of a bread board!!
Here's a shot of a tattoo machine's binding posts:
They're offered by literally dozens of company's both cheap and pricey. I have no doubt using them would make a seriously sexy turret board construction! If you insulated the binding posts same as we do with the tattoo machines, you could use a copper clad board instead of turret and have a very effective ground plane.
It all boils down to how creative you wanna be!