Convolution Blockhead | Stewart Coffin 4x4x4 Cube Puzzle stem activities Key Features:

Key Features:

or holiday stocking stuffer for puzzle enthusiasts and drink lovers

1” across the flats

creatures and scenes from the great state of California

Convolution Blockhead | Stewart Coffin 4x4x4 Cube Puzzle stem activities Key Features:Convolution Blockhead is a handcrafted wooden brain teaser designed by Stewart Coffin. Seven intricately cut pieces assemble into a 4x4x4 cube. The pieces do not just pack together. They interlock in a specific sequence, which adds depth beyond a typical packing puzzle. Handcrafted by Creative Crafthouse with Stewart Coffin's permission. Each puzzle is precision cut for an excellent fit. Dimensions: 2. 75 inches per side when assembled. 7 interlocking