I'll just leave this here ...

[uwe]

Never noticed that album cover before. Is that a steel guitar or are you supposed to play it via fretting from above, double-bass high register access style?

[ilan]

Thumb position skills will not help you here. It's just a stupid instrument.

[Pilgrim]

Looks to me like upper body exercise and little more.

[Basvarken]

No Uwe, I'm not going to build that for you.

[uwe]

You've never been reliable for anything.

[Basvarken]

Yup, you can always count on me to be unreliable

[doombass]

I guess he must have given up on the guitar seeing a pair of bridge post holes located further towards the neck ont that shortscale bass. I would've rather given up on that neckless instrument.

[uwe]

Perhaps he wanted to create an open tuning drone/feedback with it? Like Page did with the 12-string of his SG double-neck.

[Alanko]

Back when mahogany was cheap and expendable!

Middle neck looks like it had a shorter scale length at some point? John Birch pickup in the same sort of surround as Tony Iommi's modded 'Monkey' SG.

Also looks like the slide neck can only be tuned with piano pegs?

[godofthunder]

  Responsible for the famous bicep muting technique. A the 70's when all things were possible at the puff of a dobbie.

[gearHed289]

I thought it was only fair that we all got to see and hear the man in action!

[uwe]

Well, it's catchy!