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Calibron 12 was the subject of The Mystery of the Calibron Twelve Block Puzzle
Each 1/4 inch thick piece is laser engraved with retro controllers
Woods may include Walnut
character or party name or anything else you might have in mind
each piece is precisely laser-cut and etched to represent breeds such as Maine Coon
Convolution Blockhead | Stewart Coffin 4x4x4 Cube Puzzle mag lock puzzle Calibron 12 was the subjectConvolution 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
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