The OPAL 480 is a fully hydraulic, water cooled hot mounting press for mounting samples before polishing. The process sequence is executed automatically. The fully automatic sliding closure allows quick and easy opening/closing of the mould assembly. Mould assemblies can be exchanged quickly and without tools. Also rectangular moulds can be produced. The robust aluminium construction is powder coated. With its solid construction and ATM hydraulic system, the operating noise of the machine is minimized.