Concrete shuttering connecting means

A set of elements for the assembly of casting molds, comprising:

• a plurality of planks each having a casting surface, an opposite surface and two edges, and adapted to be joined together adjacent one another to form a portion of a casting mold, with a second edge of a first plank being joined adjacent to a first edge of a second plank;
• the casting surface of each of said planks being adapted to have cast thereagainst a fluent castable material for hardening thereagainst and from which said planks can be readily stripped;
• each of said planks being provided with two grooves on its opposite surface, each of said two grooves being located adjacent a respective one of the two edges of each plank, each of said two grooves having an undercut dove-tail side closest to the respective edge to which it is adjacent;
• and
• means to join two said planks to one another to define a portion of a casting mold, said joining means comprising a pair of profiled rails, each of said rails having a tongue complementary in shape to the grooves in said planks, and connector means to tighten said rails together when the tongues of said rails interlock with the grooves of said planks to tightly hold said planks together.