Metal mold for molding a honeycomb structure

A metal mold for molding a hexagonal honeycomb structure comprising:

• a feed portion having feed holes defined therethrough for feeding a material for molding the honeycomb structure;
• a distribution portion having pool grooves formed in the shape of a triangular lattice and communicated at an upstream side thereof with said feed holes of said feed portion;
• and
• a honeycomb forming portion having slit grooves formed in the shape of a hexagonal lattice, said slit grooves being communicated at an upstream side thereof with a downstream side of said pool grooves and open on a downstream side thereof at a mold surface of said honeycomb forming portion, whereby molding material fed through the feed holes distributes through said pool grooves and extrudes through said slit grooves.