Hi everyone!
I'd like to show you my first original design: the Axis Octahedron.

As my Ghost Octahedron, the puzzle is mechanically similar to the Dino Octa and the Crazy Octahedron Plus Standard, an FTO with center pieces.
The mechanism is turned by 45 degrees inside the solid by an axis through two opposite vertices.
The puzzle is the same size as the Crazy Octahedron Plus, about 97mm of edge length.

It use 8 Dayan screws and springs, but it can also support M3 screws.
I wanted to use springs in my design for 3 main reasons:
-it gives to the puzzle a little corner cutting ability, not as good as a speedcube, but it's still appreciable.
-with springs, the friction between pieces is more constant, it gives to the puzzle a nice feeling while turning.
-and finally, it also makes it breaking in quicker and more accurately.

The puzzle is fun to play with, not too hard to solve, and the different shapes it takes look great.

--- edit ---

Here is the final version of the Axis Octahedron, comparing to the prototype shown before, the turning is better with far less locks-up, due to more filleting in the right places. The external wall thickness is more specific for each piece, to avoid bending. And the finishing is overall more polished.
Enjoy


Final Version - Updated Photos

Very nice!!
I would love to own one.

Yeah, me too, definitely awesome!

Thanks
I'll sell the V2 when it will be done.

beautiful design.  complex, but looks like something i could solve without a weekend of diagramming and notation.

Final version complete!
I've updated the photos and started an auction.

Final version auction

That's beautiful!