Toy construction fabricating member and assemblage

A toy assemblage comprising an assembly of at least two toy construction fabricating members, each defining a plurality of bores extending through said fabricating member and a plurality of holes extending inwardly of said fabricating member, each surface of said fabricating member being penetrated by at least one of said holes or bores, each said fabricating member further defining means to provide for limited resilient expansion of at least some of said holes and bores when members complementary thereto are force-inserted thereinto whereby said force-inserted members are firmly gripped, said means comprising a plurality of bore slits for some of said bores and a plurality of hole slits for some of said holes, each said bore slit extending inwardly from a surface of said fabricating member to a said bore and each said hole slit extending inwardly from a surface of said fabricating member to a said hole, each said slit extending in a plane parallel to the axis of its associated bore or hole and intersecting its associated surface and associated bore or hole along a distance of at least half the length of its associated hole or bore, and a complementary connecting member of a size adapted to be resiliently retained in one of said slit bores or holes of two of said fabricating members.