Stewart Coffin has been called "the most outstanding designer and maker of interlocking puzzles that the world has ever seen". He is credited with over four hundred designs spanning a huge variety of genres, including striking polyhedral sculptures, ingenious tray-packing challenges, and pioneering examples of interlocking cube puzzles. He has also written extensively on puzzle design and craftsmanship, most notably in his books Geometric Puzzle Design and AP-ART: A Compendium of Geometric Puzzles (see link to the latter below).
For more information on Coffin, you can check out any of these freely available references:
The Puzzling World of Polyhedral Dissections, full text of Coffin's book on puzzle design
AP-ART, another of Coffin's books, with commentary on many of his designs
Index of many of Coffin's designs on puzzle-place
Coffin has worked extensively across numerous puzzle genres (many of which he invented!) His designs are subdivided according to assembled shape; click on one of the categories below for a collection of his puzzles of that type.
Puzzles that assemble into an interlocking (non-rectilinear) polyhedral form. These are perhaps Coffin's most iconic designs.
Puzzles that are formed by interlocking (non-rectilinear) notched sticks, including stick-and-dowel constructions.
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All puzzle designs are (c) their respective designers and are licensed for personal, non-commercial use only.