Interlocking - Iso-Prism

Isoprism
Larger Photograph (85.1K)
Designer:Stewart Coffin
Craftsman:Stewart Coffin
Category:Interlocking
Material:Chinese Camphorwood
Pieces:12

This puzzle is a modification of Stewart's Isosceles in which twenty-four triangular end blocks have been added to create the effect of four mutually intersecting isosceles-triangular prisms. They have been added in a manner that results in twelve dissimilar pieces. Assembly is very difficult. Stewart made 8 in 1994. Number 101A in his numbering system.
 
More information in The Puzzling World of Polyhedral Dissections