Interlocking - Thirty Pinned Pentagonal Sticks

Thirty Pinned Pentagonal Sticks
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Thirty Pinned Pentagonal Sticks
Designer:Stewart Coffin
Craftsman:Stewart Coffin

This is the largest puzzle ever made by Stewart. The thirty pentagonal sticks are pinned with seven holes in each stick. He made 20 in 1987 and 1988. Number 80 in his numbering system. The bottom photograph shows a version pinned with five holes in each stick. It is number 80A in his numbering system and he made 1 in 1988. A three hole version was also made.
More information in The Puzzling World of Polyhedral Dissections