... process rotational moulding cast mold Rotational molding or called roto mould, rotomolding, roto-moulded, rotomold is used for hollow, large scale parts. ... the mold construction and customer specifications. Rotomolding or called roto-moulded is a popular method of creating tanks, shelving and ... other common large parts. Due to the Roto mould process, the molds come welded to frames for ...