Latch Cube 4x4x4

Based on Okamoto's original Latch Cube (http://twistypuzzles.com/cgi-bin/puzzle.cgi?pkey=1752).

Pieces to be printed:
- Corner (x8)
- Internal #1 (x12)
- Center (x24)
- Internal Center (x6)
- Internal #2 (x24)
- Edge #1 (x12)
- Edge #2 (x12)
- Locker (x24)

Additionally, you will need 6 screws and springs, and 24 additional springs for the locker mechanism. You can use a regular 4x4x4 core.