... CNC process rotational moulding cast mold Rotational molding or called roto mould, rotomolding, roto-moulded, rotomold is used for hollow, large scale parts ... , shelving and other common large parts. Due to the Roto mould process, the molds come welded to frames for insertion into ... know more about roto mold. The advantage of rotational moulding:1. The cost of plastic rotational mould is low,compared ...