What an interesting and difficult puzzle designed by Stewart Coffin. 7 complex pieces will assemble sequentially to form a 4x4x4 cube. I like this one alot. Really tests the spatial relationship skills. You will likely feel like a blockhead after working hours to solve this one. Measures about 2 3/4" cube.Excellent fits on this puzzle make it challenging to even dis-assemble, but of course the real challenge is in the assembly.
2012 - PuzzleMad
PuzzleMad: A Bountiful Bonanza of Beautiful and Positively
Convolution - Interlocking puzzle by Stewart Coffin (STC #30) by
Rob's Puzzle Page - Assembly and Packing
PuzzleMad: 2012
No Name : Stewart Coffin/ Brian Menold
Convolution - Interlocking puzzle by Stewart Coffin (STC #30) by
Blockhead Wood Puzzle from Creative Crafthouse - Solution
Convolution - Interlocking puzzle by Stewart Coffin (STC #30) by
Convolution Blockhead A Stewart Coffin Wood Puzzle Brainteaser
Rob's Puzzle Page - Assembly and Packing
Convolution Neil's Puzzle Building Blog