Stahls' Hotronix-Schnellwechselplatte: 4" x 4"

The platen is good and works like it should, but it needs a little tuning to make sure it sits level. It seems to sit level in one position, so be sure that the heated platen meets this 4x4 evenly or you may get some uneven pressure. If it's not level, rotate the platen 90deg at a time and seat it into the grooves on the press, checking each time.