Cast Laby: Mechanical Puzzle of the week

Cast Laby was invented around 1900. The object is to separate the 2 pieces. One disc has 2 different mazes on each side! The other disc has 2 pins - one for each maze. This is a terrific puzzle. It's not easy! It took me about 1 hour to solve.

Bits and Pieces used to make this puzzle in brass. However, their version was not an exact duplication; this made the puzzle much easier with an unintended solution.

Here's the solution.