The Moose Ball was the second puzzle I brought along on my present business trip, together with the Cubic Burr.
This is a "tetrahedrally based puzzle with only four pieces"...according to the instructions which came with the puzzle. If you are stumped by the technical term (like I was, click here), And if you are wondering what's a moose, click here.
This puzzle was Simon Bexfield's IPP35 Exchange Puzzle and Simon 3D printed the puzzle himself. Nicely done and quality and fit is good.
The puzzle consists of 4 pieces and the object is to take it apart and put the pieces back together again. When I first handled it I thought it was some sort of co-ordinate motion puzzle and tried to pull all 4 pieces apart together. Not really so, as I played with it and figured what needed to be done since the 4 pieces are "locked" together.
Its not a difficult puzzle and most experienced puzzlers would be able to solve it quite quickly. Putting it back together is a slight tad harder but with only 4 pieces and single solution, not hard to figure out either.
I believe Simon has the Moose Ball available for sale (and not only in black) but in a variety of colours as well. If you would like want, you can contact Simon via his website.