Chouinard Drilled Hexcentrics
Chouinard factory drilled hexes from 1978. Sizes #7 through #11 were drilled out to save weight when the hexes were still “thick walled”. The next design changed to a “thinner walled” stock and made them relatively light without drilling them out.
Vertical Archaeology also has the do-it-yourself drilling template offered for the 1975 through 1977 solid Hexes.